Citizen u680 User Manual

取扱説明書

Thank you for your purchase of this Citizen watch.
Before using the watch, read this instruction manual carefully to ensure correct use.
After reading, be sure to store this manual in a safe place should it be needed for
future reference.

Visit the Citizen website (http://www.citizenwatch-global.com/) to view
visual guides for operation of your watch.
Some models may be equipped with external features (calculation scale,
tachymeter, etc.). Visual guides for operation of such external features can
also be found on the website.

To check the movement number

A case number−4 alphanumeric characters and
6 or more alphanumeric characters−is engraved

on the case back. (Figure on the right)

The first 4 characters of the case number

represent the movement number of the watch.
In the example on the right, “
the movement number.

△△△△

” is

<Engraving position example>

The engraving position may differ
depending on watch model.

107

Safety precautions (

This manual contains the following instructions that should be strictly followed at all times to
prevent injury to yourself and other persons as well as damage to property.

Safety advisories are categorized and depicted in this manual as follows:

IMPORTAMT

)

DANGER

WARNING

CAUTION

Important instructions are categorized and depicted in this manual as
follows:

Warning (caution) symbol followed by instructions that should be followed or
precautions that should be observed

Warning (caution) symbol followed by prohibited matters.

108

Highly likely to cause death or serious injury

Can cause serious injury or death

Can or will cause minor or moderate injury or damage

Protective Stickers

Be sure to remove any protective stickers that may be on your watch (case back,
band, clasp, etc.) Otherwise, perspiration or moisture may enter the gaps between the
protective stickers and the parts, which may result in a skin rash and/or corrosion of
the metal parts.

Band adjustment

We recommend seeking the assistance of an experienced watch technician for sizing
of your watch. If adjustment is not done correctly, the bracelet may unexpectedly
become detached leading to loss of your watch or injury.
Consult your nearest authorized Citizen Service Center.

109

■ World Time Eco-Drive
Radio Controlled Watch ■

This watch is a radio controlled watch that receives standard time radio
waves broadcast from Japan, the USA, Europe (Germany) and China in
order to correct the time and date.

The radio controlled watch has no effect on the human body or medical equipment.

■ Fully charge your watch before use by

exposing it to sufficient light ■

The second hand will move at 2-seconds intervals when the watch is insufficiently

charged. Charge your watch as indicated in “Guide to Charging Time” .

* Charge the watch in direct sunlight for a long time once a month.

110

Part Names (1)

Charge level indicator/
radio wave reception
indicator

Home time hour hand

UTC hour hand

UTC minute hand

Home time minute
hand

Button (B)

24-hour hand

Digital display 2
(Displays the home city)

Crown for turning
the outside scale

Home time second
hand

Mode hand

Crown

Button (A)

Digital display 1
(Displays world city/
world time)

• The illustrations shown in this manual may differ from the actual watch you have purchased.

111

Part Names (2): Digital Displays

[Digital display 2] [Digital display 1]

Home city name

Insufficient charge
warning mark

World city time
Hour/minute/second

Note: To assist in the explanation, all parts of the digital display are shown in the illustration.

112

World city name

Chronograph
measurement mark
Timer measurement mark

Alarm setting mark

Daylight saving time setting
mark

Morning: A
Afternoon: P

Part Names (3): Radio Wave Reception Display

NO: Signal reception failed RX: Reception in progress

JPN: JJY (Japan)
USA: WWVB (USA)
EUR: DCF77 (Germany)
CHN: BPC (China)

H, M, L: Reception level/

Modes where reception is
possible: CAL, TME and
RX-S

reception status

113

Table of Contents

1. Your Watch .............................................................................................. 117

2. Before Use .............................................................................................. 120

 •CheckingtheReferencePosition ...................................................... 122

3. Basic Watch Operations ....................................................................... 124

Radio Signal Reception

4. Radio Signal Reception......................................................................... 126

5. Poor Reception Areas ........................................................................... 130

6. Display during Reception ..................................................................... 131

7. Confirming Reception Status ............................................................... 132

8. Reception Area Guidelines ................................................................... 134

9. World City Display ................................................................................. 138

114

Operations in Each Mode

10. Changing Mode ...................................................................................... 142

11. Using Home Time and World Time....................................................... 144

12. Using Daylight Saving Time ................................................................. 146

13. Setting the Time (TME) .......................................................................... 147

14. Setting the Calendar (CAL) ................................................................... 151

15. Using the Timer (TMR) .......................................................................... 154

16. Using the Chronograph (CHR) ............................................................. 158

17. Using the World Time Setting (WT-S) .................................................. 160

18. Using the World Time Alarm (AL-1 and 2) ........................................... 164

19. Using the Receive Setting (RX-S) ........................................................ 166

20. LED Lights .............................................................................................. 170

21. Resetting Your Watch ............................................................................ 170

22. Adjusting the Reference Position ........................................................ 172

Solar Power

23. Solar Power Function............................................................................ 176

115

24. Characteristics of the Eco-Drive Watch .............................................. 178

A. Power Saving Function .................................................................... 180

B. Insufficient Charge Warning Function ............................................ 182

C. Overcharging Prevention Function ................................................. 183

D. Guide to Charging Time ................................................................... 184

E. Charge Level Display ........................................................................ 186

F. Handling Your Solar Powered Watch ............................................... 188

Troubleshooting

Radio Signal Reception Function ........................................................ 190

Eco-Drive ................................................................................................ 194

Precautionary Items and Usage Limitation ............................................... 196

25. Specifications ........................................................................................ 204

Warranty and After-Sales Service .............................................................. 208

To Customers with Reception Problems ................................................... 210

Customer Support Center ............................................................................ 211

116

■

1. Your Watch

<Radio Signal Reception Function>

This watch is a radio controlled watch, which receives the standard time radio waves that are
broadcast from radio wave transmitters in four regions, Japan, the USA, Europe (Germany) and
China, and uses these waves to automatically correct the time and date.

P. 126

◎ Automatic reception: The watch will automatically receive the radio wave up to three

times a day, at 2 a.m., 3 a.m. and 4 a.m., and adjust the time and date accordingly.

The 4 a.m. automatic reception can be changed to any time of the day.

◎ On demand reception function: The radio wave can be received at any time of the day

to adjust the time and date.

<World Time Function>

◎ UTC (Coordinated Universal Time), the time and date of 43 cities (or regions) from around

the world and one city (any can be set) can be displayed and easily called up. It is

convenient when traveling overseas on business or vacation.

Daylight saving time can also be set.

P. 144

117

<Solar Power Function>

This is a multi-functional Eco-Drive watch, which is equipped with a solar power
function for powering the watch by converting light energy into electric energy.

◎ Charge level display function: This function displays the charge level in four

grades, to give an approximate indication of how much the rechargeable cell is

charged.

◎ Power saving function: The watch is equipped with two power saving functions.

If the watch face is not exposed to light for 30 minutes or longer, all the LCD display

sections turn off (Power saving 1). If the watch face is then not exposed to light for

one week or longer, some of the watch’s functions are stopped in order to minimize

the watch’s power consumption (Power saving 2).

118

P. 186

P. 180

The watch integrates three functions, a JIS Type 1 magnetic resistance watch* function, shock
detection function, and Automatic hand correction function, in order to prevent hand misalignment

caused by external factors such as impacts or magnetism.

* JIS: Japanese Industrial Standards
A JIS Type-1 antimagnetic watch (able to withstand a direct-current field of 4,800 A/m)

maintains its time functionality as close as 5 cm away from devices that generate a magnetic

field during normal use.

119

■ 2. Before Use

NO: Signal
reception failed

[Insufficient charging]

Charge level
indicator

120

RX: Reception
in progress

Reception level/
reception status
H: High
M: Middle
L: Low

Crown

Button (A)

Mode hand

[Fully charged]

Check the movement of
the second hand.

The second hand is
moving at 1-second
intervals.

The second hand is
moving at 2-second
intervals or is stopped.

Charge the watch
sufficiently by placing it in
direct sunlight as indicated
in “Guide to Charging
Time” .

Check the
reception status.

• Pull out the crown to

position 1.

• Turn the crown to

align the mode hand
with TME.

• Return the crown to

the normal position.

• Press the lower right

button (A) at the 4:00
position.

The second
hand indicates
a reception
status of H, M
or L

The second
hand indicates
a reception
status of NO

Your watch is

correctly receiving

the standard time

radio wave.

It is ready to use.

Refer to “On Demand
Reception” to perform the
radio wave reception.
Before Use

If you are unable to
receive radio waves,
please inquire to the

Citizen Consumer Help
Desk at 0120-78-4807.

121

[Checking the Reference Position]

Before using the watch, confirm that the hands are aligned with
“0”, similar to when setting weighing scales

◎ The reference position may become misaligned when

the watch is exposed to strong magnetism, static

electricity or impacts. Even if radio waves are received,

the correct time will not be indicated unless the watch
hands are aligned to the correct reference position.

Check that the hands are properly aligned with “0”.

Examples of magnetic products that can affect
the watch.

• Health products (for example, medical necklaces and waist
bands that have magnetic fields)

• Refrigerators (magnetic part of the door)

• Electromagnetic cookers

• Bags (with magnet fasteners)

• Mobile phones (speaker part)

Keep the watch away from items similar to those above.

122

1. Pull the crown out to position 1 and turn to align

the mode hand with CHR (chronograph mode).

2. Pull out the crown to position 2.

• The hands will move rapidly, stopping at the

reference position recorded in the watch memory.

Correct reference positions

Charge level indicator: CHN
UTC hour and minute hands: 12:00
Hour, minute and second hands: 12:00:00
24-hour hand: 12:00

3. If the reference position is correct, the check is

now complete. Press the crown back into its
normal position.

• If a position is incorrect, refer to “Adjusting the

Reference Position” (P.172) and adjust it to the

correct position.

UTC hour and
minute hands

Hour, minute and
second hands

Charge level
indicator

Mode hand

24-hour
hand

123

■ 3. Basic Watch Operations

* The watch receives the radio wave from the radio wave transmitter located in the

home city’s region.

Home time
hour hand

Home city
(Digital display 2)

124

Home time
minute hand

1.
Check the
charge
level.

Button (B)

Crown

Digital display 1

Button (A)

Home time second hand

2.

Set the home city.

If the city in which you are
situated is displayed in

digital display 2,

(1) Pull out the crown to

position 1 and turn to align
the mode hand with TME.

(2) With the crown pulled out to

position 1, press button (A)

or (B) to call up the home

city in digital display 1.

(3) Press button (A) and button

(B) at the same time to
display the home city in

digital display 2.

3.

Set the home time.

If the home time is correct,

(1) Set the time manually
(2) Set the time by receiving the

radio wave

Caution:
If the home city is set to a city
that is outside the reception area,
the radio wave cannot be
received.
Set the time manually.

4.

Set digital display 1.

The world time or date can be

displayed on digital display 1.

Also, the mode can be switched in
order to use the alarm, timer or
chronograph.

125

■ 4. Radio Signal Reception

Three types of radio signal reception are possible: automatic reception, on demand

reception and recovery automatic reception.
There are three modes where reception is possible: time (TME), calendar (CAL) and
receive set (RX-S). The watch cannot receive signals in any other mode.
Display the home city in digital display 2 when receiving the radio wave.

• Reception is not possible unless the crown is in the normal position.

• If the home city is “UTC”, reception is not possible.

• Reception is not possible during chronograph or timer measurement.

• The reception level may change depending on the surrounding environment. While

referring to reception level (H, M or L), change the watch location, direction and angle
to try to receive the radio wave.

• When the watch is receiving the radio wave, as a general rule, all of the hands will

stop. To check the time, hold the lower right button (A) for 2 seconds to cancel radio
wave reception. The hands will then return to the current time.

• Even while the radio wave is being received, the second hand will continue to rotate to

align the minute hand with the current time. This shortens the time it takes to set the
correct time.

126

Automatic Reception

•Itisnotnecessarytooperatebuttonsduringautomaticreception.

•Thewatchwillautomaticallyreceivetheradiowaveeverydayat2a.m.,3

a.m. and 4 a.m.

•The4a.m.receptioncanbechangedtoanytimeoftheday.(P.167)

•ReceptioncanbesettoOFF.(P.167)

<Receiving the radio signals>

1. Remove the watch from your wrist and place

on a stable surface in a location, such as near

a window, from which radio waves can be
easily received, pointing the 9:00 side

(reception antenna position) in the direction

of the radio wave transmitter.

2. The watch will automatically receive the

radio wave every day at 2 a.m.

An antenna for receiving
the radio signals is located
inside the watch (on the
9:00 position).

127

On Demand Reception

•Signalscanbereceivedatanytime.

[Mode hand position

when receiving]

4. Point the 9:00 side of the watch in the direction of the radio wave transmitter, and

hold down the lower right button (A) for more than 2 seconds. Release when the
confirmation tone sounds and the second hand stops at RX. The second hand will then
move to H, M or L, and reception will begin.

* Do not move the watch during reception.

5. When the radio wave has been properly received, the second hand will automatically

move from H, M or L to the time that was received, all the hands will be corrected,
and the second hand will return to 1-second interval movement.

* Reception can take a maximum of 15 minutes.

128

(Manual Reception)

<Receiving the radio signals>

1. Pull the crown out to position 1 and turn to align the

mode hand with the CAL, TME or RX-S position.

2. Return the crown to the normal position.

3. Remove the watch from your wrist and place on a

stable surface near a window where the radio signal

can be easily received.

Recovery Automatic Reception (Automatic Reception)

•Ifthewatchstopsduetoinsufficientcharging,exposethewatchto

sunlight to recharge it. When the watch is recharged sufficiently, it will
automatically receive the radio wave once.

* Regularly charge your radio controlled watch so it does not become insufficiently

charged.

The radio wave reception can be checked with “Confirming

Reception Status”. (P.132)

129

■ 5. Poor Reception Areas

It may not be possible to receive radio waves under environmental conditions where
reception is difficult or in areas susceptible to radio noise, such as those shown in the
illustrations below.
While referring to the reception level display, try to find a location with better reception.

◆ Inside reinforced

concrete buildings or
underground

◆ Inside vehicles, including

cars, trains and aero planes

130

◆ Near TVs, refrigerators, computers,

fax machines and other home
electronics or appliances

◆ Near cellular phones that

are in use

◆ Near high-tension electrical

lines, railway overhead
wires or communication
facilities

◆ Extremely hot or cold

locations

■ 6. Display during Reception

[Reception in progress]

[Second
hand
display]

Radio
wave
reception

◆ Second hand moves to RX and

indicator

stops.

The radio wave reception

indicator points to the received
transmitter.

[Reception level] [Reception completed]

◆ The second hand moves

from RX to reception
level H, M or L and
reception starts.

◆ When the reception is success-

ful, the second hand will return
to 1-second interval movement
and the other hands will be
automatically corrected.

[Digital
display]

<Time required for reception>

Reception can take from about 2 minutes to a maximum of 15 minutes, depending on factors such as the
weather or noise. If the radio wave reception fails, the watch may return immediately to the normal display.

[Caution] During reception, the second hand may rotate once and show the reception level again.
Do not move the watch until the second hand has returned to 1-second interval movement.

Off Off

Repeatedly switches
between on and off

◆ If the reception fails, RC

and NO are displayed.

131

■ 7. Confirming Reception Status

• The result of the radio wave reception can be confirmed.

• The daylight saving time setting status of the home city can be confirmed.

1. Pull the crown out to position 1 and set the mode to TME, CAL or RX-S.

2. Press the crown back into its normal position and press the lower right button (A)

once to confirm the reception status. The second hand will move to H, M, L or NO.

• The daylight saving time setting status for the home time is displayed on digital

display 2 (flashes alternately between SMT and ON or OFF).

• The radio wave reception indicator points to

JPN, EUR, USA or CHN.

3. Press the lower right button (A) once.

• The watch returns to the normal time display

(1-second interval movement).

• It also returns automatically to normal

display if there are no operations for 10

seconds.

132

[Digital display 2]

Reception level Reception level and reception status

H

M

L

NO When reception has failed

Radio wave was received or is being received under very good reception

conditions.

Radio wave was received or is being received under good reception

conditions.

Radio wave was received or is being received under not very good reception

conditions.

* The time display may shift slightly depending on the

reception environment and internal watch processing
even if radio waves are properly received.

* H, M and L indicate the reception status and are not

connected to the performance of the watch.

• If NO is indicated, find a location or direction where

the reception is better and perform on demand reception
again.

133

■ 8. Reception Area Guidelines

This watch can receive standard time radio waves broadcast from Japan (two transmitters), the USA, Europe

(Germany) and China.

The standard time radio wave to be received can be changed by selecting the city in another region.
The maps show the approximate reception areas. However, note that the radio wave condition could change

due to factors including the weather (such as lightning) and changes in the season or sunrise/sunset time.

The reception area on the map is only guideline, and it may be difficult to receive the radio signal even

within the areas indicated on the map.

The standard time radio wave used by this radio controlled watch may be interrupted occasionally due to
special circumstances at the radio wave transmitter.
Even if reception of the standard time radio wave has failed, the watch will continue to be accurate to
within ±15 seconds per month.

134

JPN

USA

EUR

CHN

Standard time

radio signal

JJY

Japan

WWVB

USA

DCF77

Germany

BPC

China

Transmitter Frequency

Ohtakadoya-yama Standard Time Transmitter

(Fukushima Transmitter)

Hagane-yama Standard Time Transmitter

(Kyushu Transmitter)

Fort Collins Transmitter, Denver, Colorado

Mainflingen Transmitter, Southeast Frankfurt

Shangqiu Transmitter, Henan

40 kHz

60 kHz

60 kHz

77.5 kHz

68.5 kHz

JPN: JJY (Japan) Automatically selects one of the two transmitters
Fukushima Transmitter: Radius of approximately 1,500 km from the transmitter
Kyushu Transmitter: Radius of approximately 2,000 km from the transmitter

135

USA: WWVB (USA) Fort Collins: Radius of approximately 3,000 km from the transmitter

136

EUR: DCF77 (Germany) Mainflingen: Radius of

approximately 1,500 km from the

transmitter

CHN: BPC (China) Shangqiu, Henan: Radius

of approximately 1,500 km from the

transmitter

137

■ 9. World City Display

UTC (Coordinated Universal Time) and 43 cities (or regions) are registered in this watch

in advance, and it is also possible to register one additional city. The time of each city
can be called up and displayed.

• Press the upper right button (B) while the crown is in position 1 during TME mode or

CAL mode to display in sequence from the top left to bottom right the city names
shown in “Table of UTC Time Zones”, and press the lower right button (A) to display
the city names in sequence from the bottom right to top left.

UTC: Coordinated Universal Time
This is the time of an atomic clock that is used as the global standard (= international atomic time).
It uses leap seconds to correct deviations in time systems that are based on the rotation of the Earth
(universal time).

138

[Cities and the standard time radio
wave assignment]

The received standard time radio waves shown
in “Table of UTC Time Zones” are assigned one
of the following four radio wave transmitters, in
accordance with the home city in digital display

2.

[Standard time radio wave
assignment]

Radio signal transmitter

Digital display 2

• Radio wave transmitters are assigned even for countries and regions outside the

reception area.

• Radio wave transmitter assignment does not guarantee reception.

• For regions that are assigned Japan’s standard time radio wave (JJY), either the

Fukushima transmitter or Kyushu transmitter is selected automatically for reception,
whichever is easier to receive.

JPN : JJY (Japan)
USA : WWVB (USA)
EUR : DCF77 (Germany)
CHN : BPC (China)

139

[Table of UTC Time Zones]

Set to TME mode and press the upper right button (B) repeatedly while the crown is in position 1 to
display in sequence in digital display 1 the table’s city names from top to bottom, and press the lower
right button (A) to display in sequence the city names from bottom to top.

Abbreviation

UTC

City name

Coordinated
universal time

LON London 0

Signal station

Time zone

Abbreviation

City name

0 --- DXB Dubai + 4

KBL Kabul + 4.5

Time zone

MAD Madrid + 1 KHI Karachi + 5

PAR Paris + 1 DEL Delhi + 5.5

EUR

ROM Rome + 1 DAC Dhaka + 6

BER Berlin + 1 RGN Yangon + 6.5

CAI Cairo + 2

BKK Bangkok + 7

ATH Athens + 2 SIN Singapore + 8

JNB Johannesburg + 2 HKG Hong Kong + 8

MOW Moscow + 3 BJS Beijing + 8

EUR

♦

RUH Riyadh + 3 TPE Taipei + 8

THR Tehran + 3.5 SEL Seoul + 9

•

If you go to a city other than these 43 cities, display the same time zone as that of your destination.

140

•

“EUR” → Europe radio wave, “CHN” → China radio wave, “JPN” → Japan radio wave, “USA” → USA radio wave

Signal station

EUR

CHN

CHN

JPN

♦

♦

• Radio waves are only received from the assigned transmitters. (Example: When TYO is displayed in digital

display 2, radio waves other than the Japan radio wave cannot be received.)

• You may not be able to pick up the signal in environments where signals cannot reach you.

• The city of ♦ is outside the reception range and signals cannot be received. (The watch will attempt to receive

signals from each station at the appointed time.)

Abbreviation

City name

Time zone

Signal station Abbreviation

City name

Time zone

Signal station

TYO Tokyo + 9 JPN MEX Mexico City - 6

ADL Adelaide + 9.5

SYD Sydney + 10 NYC New York - 5

NOU Noumea + 11 YMQ Montreal - 5

AKL Auckland + 12 SCL Santiago de Chile - 4

SUV Suva + 12 RIO Rio de Janeiro - 3

MDY Midway - 11

HNL Honolulu - 10

CHI Chicago - 6

JPN

♦

FEN

USA

♦

Fernando de
Noronha

USA

USA

- 2
EUR

ANC Anchorage - 9 PDL Ponta Delgada - 1

YVR Vancouver - 8

LAX Los Angeles - 8

USA HOM

DEN Denver - 7

* National governments may change the period of daylight saving time, the

Time zone
set by user

time zone

, or the names of cities.

Any

Depends
on the
time zone

♦

♦

141

■ 10. Changing Mode

This watch has eight modes: time (TME), calendar (CAL), timer (TMR), chronograph
(CHR), world time set (WT-S), alarm 1 (AL-1), alarm 2 (AL-2) and receive set (RX-S).

1. Pull the crown out to position 1 (mode switching position).

• The home city and (M) are displayed alternately on digital display 2 to show that the

mode switching status has been entered.

2. Turn the crown to the right or left to align the mode hand with the desired mode.

3. Return the crown to the normal position.

142

Digital
display 2

Mode switching
position

Displayed
alternately

Mode hand

<Mode names>

* Crown in position 1

【WT-S】

World time set

【CHR】

Chronograph

【TMR】

Timer

【CAL】

Calendar

Turn the
crown to
the right

【TME】

Time

Turn the
crown to
the left

【AL-1】

Alarm 1

【AL-2】

Alarm 2

【RX-S】

Receive set

143

■ 11. Using Home Time and World Time

• When going to a country or region in a different time zone when on business or vacation, the

destination home time can be easily displayed by switching the home time and world time.

* Switching can only be performed during the time mode (TME) or calendar mode (CAL).

<Switching between home time and world time>

Example: Going to New York from Los Angeles
When Los Angeles time “10:09 a.m.” is displayed for the home time

1. Pull the crown out to position 1 (mode switching position).

• Turn the crown to enter time mode (TME) or calendar mode (CAL).

• The home city LAX and (M) are displayed alternately on digital display 2, to show that the

2. Press button (A) and button (B) at the same time.

• A confirmation tone sounds, and the Los Angeles and New York city names and times are

3. Turn the crown to return to the original mode.

4. Return the crown to the normal position to complete the operation.

(“P1:09” stands for 1:09 pm.)

144

(hand display) and New York time “P1:09” is displayed for the world
time (digital) (NYC is displayed in digital display 1, and LAX is
displayed in digital display 2)

mode switching status has been entered.

switched.

Example: During time mode (TME)

Los Angeles Switch New York

Button (B)

Digital
display 2

[Digital display 2]

Home city: LAX (Los Angeles)

Home time (hand display): 10:09 a.m.

[Digital display 1]

World city: NYC (New York)

World time (digital display): P1:09

Button (A)

Digital display 1

Pull the crown out to
position 1 and press
buttons (A) and (B) at
the same time.

The hands also change
at the same time.

Home time (hand display): 1:09 p.m.

World time (digital display): A10:09

[Digital display 2]

Home city: NYC (New York)

[Digital display 1]

World city: LAX (Los Angeles)

145

■ 12. Using Daylight Saving Time

[What is daylight saving time?]

This is a time system where the clocks are put forward an hour during the summer, when the
daylight hours are longer.
Whether or not the system is used and the length of use differs between countries and regions.

◎ To change automatically to daylight saving time by receiving the radio wave

• By setting the daylight saving time reception setting in RX-S mode to AU, when the
radio wave is received, the time will be automatically updated with the daylight saving

time information.

* The home city must be a city within the reception area.

* The timing for changing to daylight saving time can vary depending on the city or

region. There may be cases when the time is not changed on the appropriate date.

[Setting the daylight saving time]

To activate the daylight

saving time

To deactivate the

daylight saving time

* Refer to the explanations for each mode for details on the operations.

146

Change automatically with

radio wave reception

RX-S TME/WT-S RX-S TME/WT-S

AU

AU mA OF

Either ON or OF

may be set.

Manually set the daylight

saving time

mA ON

■ 13. Setting the Time (TME)

(The time is corrected using the digital display)

• The time can be set manually in countries or regions where the radio wave cannot be
received.

• To set the time, call up the city whose time you want to correct in digital display 1. The

home time (hour/minute/second hands) cannot be corrected directly.

• It is possible to change the daylight saving time setting in TME mode.

<Correcting the time>

1. Pull the crown out to position 1 and turn to align the mode hand with TME (time

mode).

2. Press button (A) or (B) to call up the city name whose time you want to correct.

• When setting the home city time (hour, minute, second hands), switch the home city

and world city before correcting the time. (Refer to “Switching between home
time and world time”)

147

3. Pull the crown out to position 2 to enter the time correction status.

• The second hand will move to the 12:00 position and stop.

• The home city display of digital display 2 will go off.

• The correction status for the daylight saving time setting is entered and ON or OF

flashes. (There is no daylight saving time ON or OF setting for UTC.)

• Press the lower right button (A) to switch between setting (ON) and canceling (OF)

the daylight saving time.

• When daylight saving time is set, the time moves forward by one hour.

• Each time the upper right button (B) is pressed, the correction location changes. The

new correction location will begin flashing.

4. Press the upper right button (B) to enter the second correction status.

• Press the lower right button (A) to return to 0 seconds.

5. Press the upper right button (B) to enter the minute correction status.

• Turn the crown to correct the time. Turn to the right to move forward and to the left

to move back.

• Turn the crown continuously to move quickly. To stop, turn the crown to the left or

right.

148

6. Press the upper right button (B) to enter the hour correction status.

• Turn the crown to correct the time. Turn to the right to move forward and to the left

to move back.

• Turn the crown continuously to move quickly.

7. Press the upper right button (B) to enter the 12H/24H correction status.

• Press the lower right button (A) to switch between the 12-hour clock and 24-hour

clock.

• This setting is applied even in other modes.

8. Return the crown to the normal position to complete the operation.

• When the home time is corrected, the analog time, which is linked to the digital

time, is also corrected.

149

150

Button (B)

Button (A)

Position 1

Button (A)/(B)

Select the city

Position 2

Daylight saving

time setting

(B)

• When the time is set for one of the

• Daylight saving time can be set for

Button (B)

Switch between

12H and 24H

cities, the times for all the other cities
are also corrected automatically.

each city.

Correct the

second

(B)

Correct the hour

(B)

Correct the

minute

(B)

■ 14. Setting the Calendar (CAL)

(The date is corrected using the digital display)

• The date can be set manually in countries or regions where the radio wave cannot be
received.

• In the same way as for “Setting the Time”, to adjust the date of the home city, call up
the city whose date you want to correct in digital display 1.

<Correcting the date>

1. Pull the crown out to position 1 and turn to

align the mode hand with CAL (calendar

mode).

2. Press button (A) or (B) to call up the city

name whose date you want to correct.

3. Pull the crown out to position 2 to enter the

date correction status.

• The month display flashes and the home

city display and day display will go off.

[Digital display 2]

Off

[Digital display 1]

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4. Each time the upper right button (B) is pressed, the correction location changes. The

new correction location will begin flashing.

• The correction location changes in the following sequence: month → date → year.

5. Select the correction location and turn the crown to correct the time.

Turn to the right to move forward and to the left to move back.

• Turn the crown continuously to move quickly.

To stop, turn the crown to the left or right.

• When the year, month and date are set, the day is corrected automatically.

6. Press the crown back into its normal position.

152

Button (B)

Position 1

<Date correction status>

Button (A) / (B)

Select the city

Position 2

Button (A)

• When the date is set for one of the cities, the dates for all the other cities are also

corrected automatically.

• The year can be set between 2000 and 2099.

• When the year, month and date are set, the day is corrected automatically.

• If a date that does not exist is set (for example, February 30), when the watch returns to

the normal display, it automatically displays the first day of the next month.

Correct the month

Button (B)

Correct the date

(B)

Correct the year

(B)

153

■ 15. Using the Timer (TMR)

• The timer can be set from 1 minute up to 99 minutes, in 1-minute units. After the end
of measurement, the time-up tone sounds for about 5 seconds and the watch returns to

the timer initial setting status. (Auto return function)

• Press the lower right button (A) during measurement to return to the initial set time and

start measurement again. (Flyback function)

• Radio waves cannot be received during timer measurement.

<Setting the timer>

1. Pull the crown out to position 1 and turn to

align the mode hand with TMR (timer

mode).

2. Pull the crown out to position 2 to enter the

timer setting status.

• SET is displayed in digital display 2 and

the minute display in digital display 1

flashes.

154

[Digital display 2]

Minute display flashes

Settings
complete

[Digital display 1]

3. Turn the crown to set the time.

• Turn to the right to increase the time and turn to the left decrease the time.

• Turn the crown continuously to move quickly.

To stop, turn the crown to the left or right.

4. After completing the settings, return the crown to the normal position.

• Digital display 2 changes to RES (reset).

155

<Using the timer>

1. A confirmation tone will sound each time you press the upper right button (B) to start

and stop the measurement.

• RUN (run) is displayed in digital display 2 during measurement, and STP (stop) is

displayed when the timer is stopped. The measurement mark comes on during
measurement.

2. Press the lower right button (A) during measurement to return to the initial set time and

start measurement again. (Flyback function)

3. Press the lower right button (A) while the timer is stopped to return to the initial set time.

• Digital display 2 changes to RES.

156

Button (B)

[Digital display 2]

Button (B)

[Digital display 1]

Measurement
mark

4. When the time is up, END is displayed in digital display 2 and the time-up tone

sounds for 5 seconds.

• To stop the time-up tone, press button (A) or (B).

• RES is displayed on digital display 2 and the timer returns to the initial set time.

* The measurement continues even if the watch is switched to a different mode during

measurement.

* The time-up tone does not sound unless the crown is in the normal position.

157

■ 16. Using the Chronograph (CHR)

• The chronograph can display times up to 23 hours 59 minutes and 59.99 seconds.

• After it exceeds 24 hours, the measurement stops and the chronograph returns automatically

to the reset status.

• Radio waves cannot be received during chronograph

measurement.

<Using the chronograph>

1. Pull the crown out to position 1 and turn to align the

mode hand with CHR (chronograph mode).

2. Return the crown to the normal position.

3. A confirmation tone will sound each time you press

the upper right button (B) to start and stop the measurement.

the lower right button (A) during measurement to

4. Press

display a split time for 10 seconds. After the 10 seconds, the

watch returns to the measurement status. (Auto return function)

• The measurement mark is displayed during measurement and

during the split display.

• The SPL display flashes during the split time display.

the lower right button (A) while the chronograph is

5. Press

stopped to return to the chronograph reset status.

158

Button (B)

Button (A)

Measurement mark

Mode
switching
position

• While the chronograph is being operated, the display of digital display 2 changes as

follows.

(Reset)

Button (B)

(During measurement)

Button (A)

(B)

*

(B)

(Split display)(Measurement stopped)

(A)

(A)

* If there are no button (A) or (B) operations for 10 seconds, the watch returns to the

measurement status.

• The measurement continues even if the watch is switched to a different mode during

measurement.

159

■ 17. Using the World Time Setting (WT-S)

• Daylight saving time can be set for each city. (Cannot be set for UTC)

• Whether show or hide each city (44 cities other than UTC) can be set.

* Using this function, it is easy to call up and display the cities from each mode. (Zone set function)
* If a city is set to not display, it cannot be displayed from other modes.

• Any time zone in units of 15 minutes can be set for HOM (user setting city).

[NOTE]

Even if daylight saving time is set for each city in WT-S mode (ON or OF (off)), if AU is set in RX-S
mode, priority is given to the daylight saving time setting in RX-S mode, with ON automatically
switched to OF or OF automatically switched to ON.
(Users in countries or regions without a radio wave transmitter should make sure that the start date and
finish date of daylight saving time are accurate.)

<“Daylight saving time” and “Show/hide city” settings>

1. Pull the crown out to position 1 and turn to align the mode hand with WT-S (world time set mode).

2. Pull the crown out to position 2 to enter the world time correction status.

• Digital display 2 goes off, digital display 1 enters the daylight saving time setting status for the city

that is displayed, and ON or OF flashes.

• The initial settings are all OF (canceled).

160

3. Press the lower right button (A) to switch between daylight saving time ON (set) and OF (canceled).

• When daylight saving time is set, the time will move forward by one hour.

• Turn the crown to set the daylight saving time for other cities. Turn to the right to change in the

direction of cities with more of a time zone, and turn to the left to change in the direction of cities
with less of a time zone.

4. Press the upper right button (B) to switch between the show/hide setting status for the city.

• SET (show) or OFF (hide) flashes.

• The initial settings are all SET (show).

5. Press the lower right button (A) to select SET or OFF.

• Press the lower right button (A) to switch between displaying SET and OFF, and then select the

desired setting.

• Turn the crown to set other cities.

6. Press the crown back into its normal position.

Button (B)

Mode switching
position

Correction position

Button (A)

Daylight saving time
Set (ON)/
Canceled (OF)

City name

City
Display (SET)/
Hide (OFF)

[Digital display]

161

<Setting the desired time zone>

• Any time zone can be set for HOM (user setting city), in intervals of 15 minutes from the

UTC time. (Range of -12 to +14 hours from UTC)

• The radio wave received at HOM will be from the transmitter assigned to the city that has the

most similar time zone with UTC.

1. Pull the crown out to position 1 and turn to align the mode hand with WT-S (world time set

mode).

2. Pull the crown out to position 2 to enter the world time correction status.

3. Turn the crown to call up HOM for the world city.

• ON or OF flashes and the watch enters the daylight saving time setting status.

[Digital display 2]

Daylight saving
time ON/OF flashes

162

[Digital display 1]

Turn the crown to
select HOM

4. Press the upper right button (B) twice to enter the

time zone setting status.

• Each time you press the upper right button (B), the

“Daylight saving time ON/OF”, “City display SET/
OFF” and “Time zone setting” correction location
changes. The new correction location will begin
flashing.

5. Turn the crown to set the time zone.

• Turn to the right to display (+) in the world time

section and display time zones with UTC in
15-minute units in the time display section.

• Turn to the left to display (–) in the world time

section and display time zones with UTC in
15-minute units in the time display section.

• Turn the crown continuously to change the time

zone quickly. Turn crown to the right or left to stop
the quick movement.

6. Press the crown back into its normal position.

* If the time zone is not set, the HOM city will not be

displayed regardless of whether the display is set to
SET or OFF.

[Time zone setting

status]

0:00 flashes

When a time zone of +5 hours 45
minutes with UTC is set

When a time
zone is not set

163

■

18. Using the World Time Alarm (AL-1 and 2)

• An alarm can be set for the set city time.

• Once a day, the alarm will sound for 15 seconds when it reaches the set time. To stop the

alarm, press button (A) or (B).

• The sound of the alarm is different for alarm 1 and alarm 2, but the setting method is the

same.

<Setting the alarm time>

1. Pull the crown out to position 1 and turn to align the mode hand

with AL-1 or AL-2 (alarm mode).

2. Pull the crown out to position 2 to enter the alarm correction

status.

• The set city is called up and ON or OF flashes.

3. Press the lower right button (A) to set alarm ON (set) or OF

(canceled).

• Press the lower right button (A) to switch between ON and OF.

• The alarm mark comes on when ON is set.

4. Each time the upper right button (B) is pressed, the display

flashes and the correction location changes.

164

Alarm ON/OF

Alarm
mark

• The correction location changes in the following sequence: Alarm ON/OF → City name →

Alarm: Hours

• City name: Turn the crown to select the city.

• Alarm hours/minutes: Turn the crown to the right to move the time forward and to the left

to move the time back.

Turn the crown continuously to move quickly. To stop, turn the crown to the left or right.

5. Press the crown back into its normal position.

<Alarm tone check>

In AL-1 or AL-2 mode, the alarm tone can be
checked by pulling the crown out to position 1

and pressing the lower right button (A).

→ Alarm: Minutes.

Button (B)

Position 2

Button (A)

<Alarm 1 or 2 correction status>

Select alarm ON or OF (off)

Button (A)

Button (B)

Select the city (turn the crown)

(B)

Correct the hour (turn the crown)

(B)

Correct the minute

(turn the crown)

(B)

165

■ 19. Using the Receive Setting (RX-S)

[Daylight saving time reception setting]

• Select whether to update the time with the daylight saving time from the received radio wave.

Refer to “Using Daylight Saving Time” (P.146) for details on daylight saving time.

AU (Auto): The time is updated with the daylight saving time from the received radio wave.
* The timing for changing to daylight saving time can vary depending on the city or

region. There may be cases when the time is not changed on the appropriate date.

* If AU is selected, when daylight saving time data is received for the daylight saving

time setting of the home city, the setting is changed to ON, and when no daylight saving
time data is received, the setting is changed to OF (off).

* When the radio wave of the area is received, daylight saving time for the corresponding

city is automatically updated to ON or OF (off). Refer to the “Received radio wave
transmitter” in “Table of UTC Time Zones” for the radio wave that is received in each
city.

mA (Manual): The time is not updated with the daylight saving time from the received radio

166

wave.

[Automatic reception setting]

• Set the operating conditions for automatic reception.

MAN (Manual): The 4 a.m. automatic reception can be changed to any time of the day for the

* The time can be changed in 1-hour units. It cannot be set to 2 a.m. or 3 a.m.
OFF (Off): Automatic reception is not performed.
AUT (Auto): Automatic reception is performed according to the initial settings
(at 2 a.m., 3 a.m. and 4 a.m.).

home time.

167

<Setting procedure>

1. Pull the crown out to position 1 and turn to align the mode hand with RX-S (receive

set mode).

2. Pull the crown out to position 2 to enter the daylight saving time (SMT) reception

setting status.

• AU or mA flashes and the watch enters the correction status.

• Each time the upper right button (B) is pressed, the display switches between the

daylight saving time reception setting and the automatic reception setting.

3. Press the lower right button (A) to select AU or mA.

[Daylight saving time

reception setting]

Button (A)

168

Button (B)

[Regular automatic reception setting]

Button

(A)

Turn the crown

Button

(A)

Button (A)

4. Press the upper right button (B) to enter the automatic reception setting status.

• The set automatic reception status flashes.

• AUT, MAN and OFF flash and the watch enters the correction status.

5. Press the lower right button (A) to set the automatic reception operating condition to

MAN.

• The hour of the reception time flashes.

• Each time the lower right button (A) is pressed, the correction location changes in

the following sequence: AUT → MAN → OFF.

6. To change the reception time, turn the crown to change the time in 1-hour units.

• Turn the crown to the right to move the time forward and to the left to move the time

back.

• Only the 4 a.m. automatic reception can be changed. (2 a.m. and 3 a.m. are not

displayed.)

• Only the hour can be changed, and when using the 12-hour clock, “A” indicates a.m.

and “P” indicates p.m.

7. Press the crown back into its normal position.

* Nighttime is usually a good time for reception because radio wave noise is relatively

low.

169

■ 20. LED Lights

• Press the upper right button (B) while the crown is in the normal position to turn on the LED lights of

digital displays 1 and 2 for 2 seconds. However, note that the lights do not come on in the following

cases.

* During timer mode or chronograph mode

* During radio wave reception
* During 2-second interval movement (insufficient charge warning status)

■ 21. Resetting Your Watch

• If the watch displays or operates abnormally due to a strong impact or the effects of static electricity,

reset the watch and then correct the reference position.

[Caution] After resetting, all the mode settings return to their initial settings. Perform the settings

again as required.

<Initial settings after resetting>

• Home city/world city: UTC • Time: 0:00:00

• Date: January 1, 2008 (Tuesday) • Timer: 99 minutes 00 seconds

• Chronograph: 0 hours 00 minutes 00 seconds (reset status)

• World time: City displays - all SET, daylight saving time - all OF (off)

• Alarm 1/2: City - UTC, time - 12:00, set - OF (off)

• Receive set: Daylight saving time - AU, automatic reception - AUT

170

<Resetting procedure>

1. Pull the crown out to position 1 and turn to align

the mode hand with CHR (chronograph mode).

2. Pull out the crown to position 2.

• The hands will rotate rapidly.

3. After the hands stop, press buttons (A) and (B) at

the same time.

• When you remove your finger from the buttons,

all parts of the digital displays and the lights will
come on.

• The confirmation tone sounds, the hands move

clockwise and counterclockwise and the watch switches to the reference position checking
status.

4. If the reference position is incorrect, correct it.

(Refer to “Checking the Reference Position” (P.122) and “Adjusting the Reference Position”.

(P.172)

All parts displayed

[Digital display 2] [Digital display 1]

171

■ 22. Adjusting the Reference Position

UTC hour
and minute
hands

Hour, minute
and second
hands

Charge
level
indicator

172

24-hour hand

Button (B)

Button (A)

Digital display 2

1. Pull the crown out to position 1 and turn

to align the mode hand with CHR.

2. Pull the crown out to position 2. The

hands will move rapidly and stop at the
reference position (12:00 position)

recorded in the watch memory.

3. When the upper right button (B) is

pressed for more than 2 seconds, CHA
flashes in digital display 2 and the watch

enters the reference position correction
status.

Mode hand

4. ① Adjusting the charge level indicator
(1) Display CHA in digital display 2.
(2) Turn the crown to align the charge level indicator of

the watch face with the center of CHN.

* Turn the crown continuously to move quickly. To stop,

turn the crown to the left or right.

* If no correction is required, proceed to the next step.

Press button (B).

5. Each time the upper right button (B) is pressed in the reference position correction status,

digital display 2 changes in the sequence CHA → UTC → HR → MIN, and the
corresponding hand moves to show the location to be corrected.

① [Charge level

indicator]

② [UTC hand]

(B) (B) (B)

③ [Hour hand] ④ [Minute hand]

Button (B)

173

6. ② Adjusting the UTC hands (hour hand and minute hand)

(1) Press the upper right button (B) to display UTC in the digital display.
(2) Turn the crown to align the UTC hour hand and minute hand with

12:00.

Press button (B).

• If the hands overlap and are difficult to see, press
the lower right button (A) to move the minute
hand by -3 minutes to make the UTC hands easier

to see. Press the lower right button (A) again to
return the minute hand to its original position.

UTC hour and minute hands

7. ③ Adjusting the hour hand

(1) Press the upper right button (B) to display HR in digital display 2.
(2) Turn the crown to align the hour hand with 12:00.

• Press the lower right button (A) to move the minute hand by -3

minutes to make the hour hand easier to see.

Press the lower right button (A) again to return the minute hand to

its original position.

* The 24-hour hand moves in tandem with the hour hand, so make sure

Press button (B).

that the a.m. and p.m. setting is correct.

174

8. ④ Adjusting the minute hand

(1) Press the upper right button (B) to display MIN in digital

display 2.

(2) Turn the crown to align the minute hand with 12:00.

9. When the upper right button (B) is pressed for more than 2 seconds after adjusting all

the hands to their correct reference positions, (0) is displayed in digital display 2 to

show that the reference position adjustment is completed.

10. Put the crown in position 1, set to the mode that you usually use, and then return the

crown to the normal position.

175

■ 23. Solar Power Function

This watch uses a rechargeable cell to store electrical energy.
When the watch is fully charged, it will run for about 6 months.

<Ensuring best operation of the watch>

Always store the watch in a bright location for best results.

◆ An effective way of charging the watch is to keep it in a

bright location when you are not wearing it, such as near

a window where it can receive direct sunlight.

176

◆ Wearing clothes with long sleeves makes it difficult for the watch to get the necessary

light, resulting in insufficient charging.

We recommended that you charge the watch for a long time in direct sunlight once a

month.

[Caution] Do not charge on surfaces that can easily become hot, such as a car

dashboard.

177

■

24.

Characteristics of the Eco-Drive Watch

◎ When the watch is insufficiently charged, the indication will be changed as follows:

178

[Normal display] [Insufficient charge warning]

The watch has been
insufficiently charged
because the watch face,
which contains the solar
cell, has not received
sufficient light.

2-second interval
movement

The second hand starts to move in 2-second intervals
and the mark flashes in digital display 1.

* 1. When the watch stopped due to insufficient charging

• It takes at least 30 minutes to recharge sufficiently to perform recovery automatic reception, even
if the watch is being exposed to light.

After recovery, refer to “Guide to Charging Time” and sufficiently charge the watch.
* 2. If the watch failed to perform recovery automatic reception

• The time is incorrect even if the second hand moves at 1-second intervals, so after fully charging
the watch, set the time manually or perform on demand reception.

[Recovery automatic reception]

The insufficient
charge warning (a
2-second interval
movement)
continues for more
than 3 days.

The watch will
stop due to an
insufficient
charging.

When a radio signal has been
successfully received*2

Sufficiently charge
by exposing the
watch face, which
contains the solar
cell to light.*1

When the watch is recharged
sufficiently, it will receive the radio
signal automatically once.

179

A. Power Saving Function

If the watch face is not exposed to light for a long time, the power saving function is activated

to minimize the battery consumption.

• Power saving 1: When power is not generated for more than 30 consecutive minutes, the

• Power saving 2: When the power saving 1 condition continues for 7 days or longer, to save

• The correct time continues to be kept inside the watch.

• The alarm tone will not sound.

[Normal diaplay] [Power saving 1] [Power saving 2]

digital displays go off to save power.

power, the hour hand, minute hand, second hand and 24-hour hand move to
the reference position, and the charge level indicator and UTC hands (hour

and minute) stop in their current positions.

Digital
display
areas all go
off

The digital
display areas
all go off and
the hands stop.

180

Not exposed to light
for 30 minutes or more

Not exposed to light
for 7 days or more

<Canceling the power saving function>

The power saving function will be automatically cancelled when the watch face is

exposed to light.

The power saving function can be cancelled using crown or button operations as well.

• When power saving 1 is canceled, the digital display is restored.

• After the power saving function has been cancelled, the hands will rapidly move to the

current time and return to 1-second interval movement.

• If the watch is insufficiently charged, the second hand will begin the 2-second interval

movement. Return the second hand to 1-second interval movement by sufficiently

charging the watch.

• Power saving is cancelled if the insufficient charge warning function activates during

power saving mode.

• Though the watch will continue to keep time in power saving mode, perform On

Demand Reception when using the watch after power saving mode is cancelled.

181

B. Insufficient Charge Warning

Function

When the charge level indicator reaches level 0, the
second hand’s movement changes from 1-second
intervals to 2-second intervals and the mark
flashes in digital display 1 to show that the watch is

insufficiently charged.

The watch will stop due to insufficient charging about 3
days after starting the 2-second interval movement if

kept in a place with no light.

[Caution] During 2-second interval movement, the digital displays and watch operations

• The time cannot be adjusted manually, or by using regular automatic reception or on

• Push button operations are not possible.

• All modes change to time mode.

• The alarm tone and confirmation tone will not sound. (When the timer, chronograph or

• The LED lights will not come on.

• The chronograph and timer are forcibly reset and cannot be operated.

change as follows.

demand reception.

alarm is used)

182

2-second
interval movement

◆ If the charging insufficiency occurs during radio signal reception, the operation will

stop automatically, the watch will return to the time before the operation, and

2-second interval movement will begin.

Regularly charge your radio controlled watch so it does not become insufficiently

charged.

C. Overcharging Prevention Function

When the rechargeable cell becomes fully charged by exposing the watch face to light,

the overcharging prevention function is automatically activated to prevent the battery

from being charged further.

No matter how much the watch is charged, it will not affect the rechargeable cell,
timekeeping, functions or performance of the watch.

183

D. Guide to Charging Time

* Below are the approximate times required for charging when exposing the watch dial

to light continuously.
Please use this table as a reference only.

Environment

Outdoors (sunny) 100,000 4 minutes 40 minutes 30 hours

Outdoors (cloudy) 10,000 12 minutes 2 hours 60 hours

20 cm from a

uorescent lamp

(30W)

Interior lighting 500 4 hours 30 hours

* If the second hand is moving in 2-second intervals, refer to “To charge fully when

the rechargeable cell is empty” and fully charge.

Illuminance

(lx)

3,000 40 minutes 5 hours 150 hours

To work for

184

one day

Charging time (approx.)

To start working

normally when

the cell is

discharged

To become fully
charged when the
cell is discharged

—

To work for one day...

The charging time to run the watch for one day with normal movement.

To become fully charged when the cell is discharged ...

The time for full charging after the watch has stopped due to an insufficient
charging.

[Caution] A fully charged battery will run the watch for about 6 months without further

charging. During power saving mode, the correct time continues to be kept
inside the watch for approximately three and a half years.

Charge the watch every day, as it will take a long time to recharge it, as is

indicated in the table, when it stops due to an insufficient charging.

Furthermore, it is recommended to charge your watch by exposing to direct

sunlight for a long time once a month.

185

E. Charge Level Display

• The charge level (approximate) is displayed in four grades to show how much the

rechargeable cell is charged.

• The charge level indicator points to the middle of each grade.

• Use the charge level display as a guideline when wearing your watch. We recommend that
you regularly check the charge level and keep it at level 2 or above.

[Checking the charge level display]

Level

Charge

level

display

Level 0

Level 1 Level 2 Level 3

Remaining

(approximate)

186

time

About 3 days About 3 to 20 days

Insufficient charging.

Recharge the watch

immediately. The
insufficient charge warning

is activated at this level.

The charging level is

rather low.

Recharge the watch.

About 20 to 130 days

The charge condition is
good.
The watch can be used

normally at this level.

About 130 to 180 days

The watch is
sufficiently charged.
The watch is fully
charged and can be used

normally at this level.

[Caution]

When the charge level indicator points at level 0, the rechargeable cell is very low. The second
hand moves at 2-second intervals, and the mark flashes in the digital display.

After about three days the battery will run out and the watch will stop. Be sure to recharge the
watch before this condition is reached.

187

F. Handling Your Solar Powered Watch

<Always make sure to recharge frequently>

◆ Please note that if you wear long sleeves, the watch may stop as a result of being covered by your

sleeve and blocked from the light.

◆ When you take off the watch, try to place it in as bright a location as possible. This will ensure that

it willcontinue to run properly.

CAUTION Recharging Precautions

◆ Do not charge the watch at a high temperature (about 60°C or higher) as doing so may cause the

movement to malfunction.

Example:

• Charging the watch too close to a light source which generates a large amount of heat such as an

incandescent lamp or halogen lamp.

* When charging under an incandescent lamp, be sure to leave 50cm or more between the lamp and

the watch to avoid exposing the watch to excessive heat.

• Charging the watch in a location where the temperature may become extremely high such as on the

dashboard of a vehicle.

<Replacement of Rechargeable Cell>

Because the watch uses a rechargeable cell, you do not need periodical cell replacement.

However, power consumption may increase after using for an extended period of time due to
deterioration, and the power may run out earlier than expected. To avoid this, we recommend that you
have your watch inspected (Charge basis) periodically.

188

WARNING Handling of Rechargeable Cell

◆ The rechargeable cell should never be removed from the watch.

If for any reason it becomes necessary to remove the rechargeable cell from the watch, keep out of

the reach of children to prevent accidental swallowing.

If the rechargeable cell is accidentally swallowed, consult a doctor immediately.

◆ Do not dispose of the rechargeable cell with ordinary garbage. Please follow the instructions of your

municipality regarding collection of batteries to prevent the risk of fire or environmental

contamination.

WARNING Use Only the Specified Battery

◆ Never use a battery other than the rechargeable cell specified for use in this watch.

Although the watch structure is designed so that it will not operate when another type of battery is

installed, if a silver battery or other type of battery is installed in the watch and the watch is
recharged, there is the risk of overcharging which may cause the battery to rupture.

This can cause damage to the watch and injury to the wearer.
When replacing the rechargeable cell, always make sure to use the designated rechargeable cell.

189

Troubleshooting

<Radio Signal Reception Function>

Check

• Is the home city (digital
display 2) set to the same

reception area as your current
location?

• Are you moving the watch
while receiving a signal and

the second hand is showing

RX, H, M or L?

Radio signals
cannot be
received.

190

Problem

• Check the map and change the setting.

• Check the map.

• Change the setting.

• Do not move the watch until the
signal has been properly received
(until normal hand movement is

restored).

(Reception can take from about 2

minutes to a maximum of 15 minutes.)

Remedy

Problem

Radio signals
cannot be
received.

• Are there objects nearby that

could block radio signals or
generate noise?

• Are you attempting to receive the

radio signal in a location far from a
window?

• Is the second hand moving at
2-second intervals?
(When the second hand moves in
2-second intervals, the

insufficient charge warning mark

flashes in the digital display 1 and
the charge level indicator points at
level 0.)

Check

• Avoid objects that block radio signals

or generate noise. Try to receive radio
signals by pointing the 9:00 position of

the watch in the direction of the radio
signal transmitter.
Find a location such as window that is

conducive to radio signal reception and

change the watch location, direction
and angle.

• Radio waves cannot be received when

the charge is insufficient.
Charge the watch sufficiently by
placing it in direct sunlight as indicated
in “Guide to Charging Time”.

Remedy

191

Problem

Radio signals
cannot be
received.

Check

• Is the mode hand pointing to
a mode other than TME, CAL
or RX-S?

• Is chronograph or timer

measurement in progress?

• Pull the crown out to position 1 and

set the mode to TME, CAL or RX-S.

• Stop the measurement, reset, and try

to receive the radio wave again.

Remedy

The time is not
correct.

192

• Is the reference position set

correctly?
Check the reference position.

• If the reference position is not

correctly set, adjust it as indicated in

“Adjusting the Reference Position”.

Problem

The time is not
correct.

The watch
successfully
received the radio
wave, but it deviates
slightly from the
correct time.

The second hand
moved suddenly to
the reception
standby (RX)
position.

Check

• Check the reception status.

• Check whether the daylight
saving time is ON or OF

(off).

• Have you set the 4 a.m.

automatic reception to a
different time?

• If the reception status is NO,

• In TME or WT-S mode, select
daylight saving time ON or OF (off).

• A slight deviance (less than 1

• Check again the automatic

Remedy

change your location and try to

receive the radio wave again. “On
Demand Reception”

second) may be caused by the
internal processing of the watch.

reception setting of the RX-S
(receive set) mode.

193

<Eco-Drive>

Problem

The watch has
stopped.

Check

• Is the charge level indicator
pointing at level 0?

• Is “ERR” displayed in
digital display 1?

• Charge the watch sufficiently until the
charge level indicator reaches level 3,

as indicated in “Guide to Charging
Time”.

• Reset the watch and then correct the

reference position.

If “ERR” is displayed again, contact

the store where you purchased the
watch or a Citizen Consumer Help
Desk or Customer Support Center.

Remedy

The watch does
not work even
after charging.

194

• Did you charge the watch

sufficiently in sunlight?

• Charge the watch sufficiently, as

indicated in “Guide to Charging Time”.

If the watch does not work even after

charging, contact a Citizen Consumer
Help Desk or Customer Support Center.

Problem

The second hand
is moving in
2-second
intervals.

The hands moved
forward quickly at
the moment that
the watch was
removed from a
desk or drawer.

Check

• Is the charge level indicator
pointing at level 0?

• Charge the watch sufficiently until the
charge level indicator reaches the fully
charged level.

• This is because the power saving

mode was canceled when the watch
was exposed to light, and the hands

moved forward quickly to the current

time. It is ready to use.

Remedy

The hands or
digital displays
are abnormal.

• Reset the watch.

(The internal watch system became
unstable because of strong static
electricity or other external influence.)

195

Precautionary Items and Usage Limitation

WARNING Water Resistance

• Refer to the watch dial and the case back for the indication of the water resistance of your
watch. The following chart provides examples of use for reference to ensure that your watch is used
properly. (The unit “1bar” is roughly equal to 1 atmosphere.)

• WATER RESIST(ANT) ××bar may also be indicated as W.R.××bar.

• Non-water resistant models are not designed to come into contact with any moisture. Take care not to
expose a watch with this rating to any type of moisture.

• Water resistance for daily use (to 3 atmospheres) means the watch is water resistant for
occasional accidental splashing.

Name

Non-water-resistant watch ----- Non-water-resistant

Everyday-use water-resistant watch WATER RESIST(ANT)

Upgraded everyday-use

water-resistant watch

196

Indication

Dial or Case back

WATER RESIST(ANT) 5 bar

WATER RESIST(ANT) 10/20 bar

Specification

Water-resistant to

3 atmospheres

Water-resistant to

5 atmospheres

Water-resistant to

10 or 20 atmospheres

• Upgraded water-resistance for daily use (to 5 atmospheres) means that the watch may be worn while
swimming, but is not to worn while skin diving.

• Upgraded water-resistance for daily use (to 10/20 atmospheres) means that the watch may be worn
while skin diving, but not while scuba or saturated diving using helium gas.

Water-related use

Minor exposure

to water(washing

face, rain, etc.)

Swimming and

general washing

work

Skin diving,

marine sports

Scuba diving using

an air tank

NO NO NO NO NO

OK NO NO NO NO

OK OK NO NO NO

OK OK OK NO NO

Operate the crown

or button when

the watch is wet

197

CAUTION

• B e particularly careful when wearing your watch while holding a small child, to avoid injury.

• B e particularly careful when engaged in strenuous exercise or work, to avoid injury to yourself
and others.

• Do NOT wear your watch while in a sauna or other location where your watch may become
excessively hot, since there is the risk of burns.

• B e careful when putting on and taking off your watch, since there is a risk of damaging your
fingernails, depending on the manner in which the band is fastened.

• Take off your watch before going to bed.

To avoid injury

CAUTION

• Always use the watch with the crown pushed in (normal position). If the crown is of the screw
lock-type, make sure it is securely locked.

• Do NOT operate the crown or any push buttons when the watch is wet. Water may enter the
watch causing damage to vital components.

• If water enters the watch or the watch fogs up and does not clear up even after a long time,
consult your dealer or Authorized Service Center for inspection and/or repair.

Precautions

198

• Even if your watch has a high level of water resistance, please be careful of the following.

If your watch is immersed in sea water, rinse thoroughly with fresh water and wipe with a dry cloth.

-

- Do not pour water from a tap directly onto your watch.

- Take off your watch before taking a bath.

• If seawater enters the watch, place the watch in a box or plastic bag and immediately take it in for
repair. Otherwise, pressure inside the watch will increase, and parts (crystal, crown, push button, etc.)
may come off.

CAUTION

When Wearing Your Watch

<Band>

• Le ather, genuine skin and rubber (urethane) bands will deteriorate over time due to perspiration,
body oils and dirt. Be sure to replace the band periodically.

• The durability of a leather band may be affected when wet (fading, peeling of adhesive), owing
to the properties of the material. Moreover, wet leather may cause a rash.

• It is recommended to take off the watch if it gets wet, even if the watch itself is water-resistant.

• Do Not wear the band too tightly. Try to leave enough space between the band and your skin to allow
adequate ventilation.

•

The rubber (urethane) band may be stained by dyes or soil present in or on clothing or other accessories.
Since these stains may not be removable, caution is required when wearing your watch with items that tend
to easily transfer color (articles of clothing, purses, etc.). In addition, the band may be deteriorated by
solvents or moisture in the air. Replace with a new one when it has lost elasticity or become cracked.

199

• Please request adjustment or repair of the band in the following cases:

- You notice an abnormality with the band due to corrosion.

- The pin of the band is protruding.

•

We recommend seeking the assistance of an experienced watch technician for sizing of your watch. If
adjustment is not done correctly, the bracelet may unexpectedly become detached leading to loss of your
watch or injury.
Consult your nearest authorized Citizen service center.

<Temperature>

• The watch may stop or the function of the watch may be impaired in extremely high or low
temperature. Do not use the watch in places where the temperature is outside the operating
temperature range as stated in the specifications.

<Magnetism>

•

Analog quartz watches are powered by a step motor that uses a magnet. Subjecting the watch to strong
magnetism from the outside can cause the motor to operate improperly and prevent the watch from
keeping time accurately. Do not allow the watch to come into close proximity to magnetic health devices
(magnetic necklaces, magnetic elastic bands, etc.) or the magnets used in the latches of refrigerator doors,
clasps used in handbags, the speaker of a cell phone, electromagnetic cooking devices and so on.

200

<Strong Shock>

• Avoid dropping the watch or subjecting it to other strong impact. It may cause malfunctions and/or
performance deterioration as well as damage to the case and bracelet.

<Static Electricity>

• The integrated circuits (IC) used in quartz watches are sensitive to static electricity. Please note the
watch may operate erratically or not at all if exposed to intense static electricity.

<Chemicals, Corrosive Gasses and Mercury>

• If paint thinner, benzene or other solvents or products containing these solvents (including gasoline,
nail-polish remover, cresol, bathroom cleaners and adhesives, water repellent, etc.)
are allowed to come into contact with the watch, they may discolor, dissolve or crack the materials. Be
careful when handling these chemicals. Contact with mercury such as that used
in thermometers may also cause discoloration of the band and case.

<Protective Stickers>

• B e sure to remove any protective stickers that may be on your watch (case back, band, clasp, etc.)
Otherwise, perspiration or moisture may enter the gaps between the protective stickers and the parts,
which may result in a skin rash and/or corrosion of the metal parts.

201

Always Keep Your Watch Clean

CAUTION

• Rotate the crown while it is pressed in fully and press the buttons periodically so they do not become
stuck due to accumulations of foreign matter.

• The case and band of the watch come into direct contact with the skin in the same manner as
undergarments. Corrosion of the metal or unnoticed soiling such as that caused by perspiration and
dirt can soil sleeves and other portions of clothing. Keep your watch clean at all times.

• The case and band of the watch come into direct contact with the skin. If you think there is something
wrong, discontinue wearing the watch immediately and consult your physician.
In the case of accumulation of sweat or dirt on a metal band or case, clean thoroughly using
a brush and neutral detergent. In the case of a leather band, wipe clean using a dry cloth.

• Le ather bands may become discolored by perspiration or dirt. Always keep your leather band clean by
wiping with a dry cloth.

202

Caring for Your Watch

• Wipe any dirt or moisture such as perspiration from the case and crystal with a soft cloth.

• For a metallic, plastic or rubber (urethane) watchband, wash any dirt off with water.
amounts of dirt trapped between the crevices of the metallic band with a soft brush.

• For a leather band, wipe off dirt using a dry cloth.

• If you will not be using your watch for an extended period of time, carefully wipe off any perspiration,
dirt or moisture and store in a proper location, avoiding locations subject to excessively high or low
temperatures and high humidity.

Remove the small

<When Luminous Paint is used for your watch>

The paint on the dial and hands helps you with reading the time in a dark place. The luminous
paint stores light (daylight or artificial light) and glows in a dark place.
It is free from any radioactive substance or any other material harmful to a human body or
environment.

• The light emission gradually becomes weaker as time passes.

• T he duration of the light (“glow”) will vary dependi ng on the brightness, t ypes of and
distance from a lig ht source, exposure time, and t he amount of the luminous paint.

• The luminous paint may not glow and/or may dissipate quickly if exposure to light was not
sufficient.

203

■ 25. Specifications

1. Cal. No.: U680

2. Type: Combination solar powered watch

3. Time accuracy: Without reception (when watch is not receiving a radio signal)

Average monthly deviation: ±15 seconds
when used in room temperature (+5°C to +35°C)

4. Acceptable temperature range: 0°C to + 50°C

5. Display functions

[Analog areas]

• Home city time: Hours, minutes, seconds, 24-hour

• UTC time: Hours, minutes

• Charge level display (fan-shaped display, 4 grades)

• Radio wave reception display: Japan: JJY, USA: WWVB, Europe (Germany:
DCF77), China: BPC

[Digital areas]

• Home city name/world city name

• World city time: Hours, minutes and seconds (switch between 12-hour and 24-hour

clock)

204

• Daylight saving time on/off

• Calendar: Month, date, day of week (perpetual calendar until December 31, 2099)

6. Additional functions

• Radio signal reception function (automatic reception, on demand reception, recovery
automatic reception)

• Radio wave transmitter automatic selection function (only when radio wave from
Japan)

• Reception on/off selection function

• Reception indication function (RX)

• Reception level indication function (H, M, L)

• Reception status confirmation function (H, M, L or NO)

• Automatic reception time setting function

• Daylight saving time on/off selection function

• World time alarm 1 and 2:Hours, minutes, AM/PM, city name, on/off, alarm check
function

• Chronograph (24-hour measurement, 1/100 second units, split time measurement)

• Timer (setting range: from 1 minute up to 99 minutes, in 1-minute units)

Flyback function, auto return function

• World time display function

205