G-Shock GW-002BJ-1 User Manual

MA0410-EA

Operation Guide 2914

Power Saving LCD Types

Power Saving causes the watch to enter a sleep state automatically and save power whenever the watch is left in the dark. The Power
Saving feature of the watch is turned on at the factory.

• Note that the watch may also enter the sleep state if the watch is blocked from light by your sleeve.

❚

How the sleep state works

Display sleep state

The display sleep state is triggered whenever the watch is left in
the dark for about one hour between the hours of 10:00 p.m. and
6:00 a.m.

• The display sleep state causes the display to go blank, except for
a flashing Power Saving indicator. The alarm and the hourly time
signal continue to operate normally while the watch is in the
display sleep state.

• The watch will not enter the sleep state if it is in the Timer Mode or
the Stopwatch Mode.

Power Saving
Indicator

Function sleep state

The function sleep state is triggered whenever the watch is left in
the dark for six or seven days. The power saving indicator stops
flashing and remains on the display to indicate the function sleep
state.

• The alarm and the hourly time signal are disabled while the watch
is in the function sleep state, and time calibration signal auto
receive is not performed.

• Digital timekeeping functions continue to operate normally in the
function sleep state.

❚

To recover from the sleep state

Move the watch to a brightly lit location or press any button. The
watch will also recover from the sleep state if you angle it towards
your eyes for reading (see “To illuminate the display with the auto
light switch”).

• It can take up to two seconds before display figures re-appear
after you place the watch in a well-lit area.

❚

To turn Power Saving on and off

Use the procedure under “Configuring Home Time Settings” to turn
Power Saving on or off.

Leaving the watch in a drawer or anywhere else it is dark can
cause Power Saving to trigger in order to conserve battery
power.

Modes and Display Screens

Each press of the

• The display will revert to the Timekeeping Mode automatically if you leave the Alarm Mode screen displayed without performing any
operation for about two or three minutes.

PM Indicator
(Appears with times
between noon and
midnight.)

Hour, minute,
second

(Mode switching)

CC

C button sounds a confirmation tone and cycles through available modes in the sequence shown below.

CC

Timekeeping Mode

Graphic Dial

Button

Button

(Display Illumination)

Button

Battery Indicator

Receive Indicator

(Screen Switching)

Button

Button

Month/Day Day of the Week

This watch is available with either of two different LCD types: light
background with dark figures (black-on-white) or dark background
with light figures (white-on-black).
Note that all of the samples in this manual show the black-on­white type LCD.

Black-On-White White-On-Black

Black indicates “ON”.

White indicates “ON”.

World Time Mode Alarm Mode

Current Time in Selected City

City Code

Stopwatch Mode Timer Mode

Alarm Time

Alarm Number

Timer Time

Changing Display Screen Contents

Each press of the button toggles the lower display contents between the date (month/day) and the day of the week.

Days of the Week

SUN: Sunday MON: Monday TUE: Tuesday WED: Wednesday THU: Thursday FRI: Friday SAT: Saturday

• A segment appears with the passage of each second of the current minute.

• For details about the battery level indicator, see “Battery Level Indicator”. For details about the receive indicator, see

“Receive Indicator”.

Mode Indicator

Elapsed Time

Mode Indicator

1

Operation Guide 2914

Power Supply

The power supply of this watch uses a solar cell to generate
electrical power, which is stored by a rechargeable battery. Using
or storing the watch where it is not regularly exposed to light, or
allowing it to be blocked from light by your sleeve for long periods
as you are wearing it can cause the power of the rechargeable
battery to run down. To ensure stable operation, be sure to allow
the watch to be exposed to light as much as possible when you
are wearing or storing it.

Important!

Note that all data in memory and all settings are cleared whenever
you allow the level of the rechargeable battery to drop to Level 4.

❚

Flashing Recover Indicator

If you use the light or alarm a number of times during a short
period, a recover (RECOV) indicator flashes on the display and
the following operations become disabled as battery power
recovers.

• Display illumination,

• Alarm and hourly time signal

• Time calibration signal reception

Normal operation will return after the
battery recovers.

Recover
Indicator

Display Illumination

An EL (electroluminescent) panel is used to illuminate the display
of the watch for easy reading in the dark. An auto light switch
automatically illuminates the display when you angle the watch
towards your eyes for reading.

❚

To illuminate the display manually

LL

Press the

L button in any

LL

mode to illuminate the display
of the watch.

• You can use the procedure under

“To specify the illumination
duration” to select either

1.5 seconds or 2.5 seconds for
the illumination duration.

• Pressing the L button illuminates the display regardless of

whether the auto light switch is on or off.

You may hear a faint rattling sound when you move the watch
around. This sound is caused by the movement of a metal
bulb that controls operation of the auto light switch, and does
not indicate malfunction.

Battery Level Indicator

Black-On-

White-On-

White

Black

Normal operation enabled.Level 1

Level 2

Level 3

Level 4

• Exposing the watch to direct sunlight or other strong light may cause
the battery level indicator to indicate a level momentarily that is higher
than the actual battery level. Because of this, you should wait for a
short while after charging to check the battery level indicator.

• Even after the battery drops to Level 4, you will be able to resume
normal operation by charging the battery.

• When charging from Level 4, the display will start operating when
the battery reaches Level 3. At this time you will be able to
configure time and date settings, but you should keep the watch
exposed to light until the battery reaches Level 2 or Level 1.

❚

Start charging at Level 3!

Battery Level 3 indicates that remaining battery power is very low.
Be sure to expose the watch to light for recharging as soon as
possible after the Level 3 indicator starts to flash.

❚

To illuminate the display with the auto
light switch

The auto light switch automatically illuminates the display
whenever you angle the watch towards your eyes for reading,
but only when it is dark.

• The auto light switch does not illuminate the display when
surrounding light is bright.

You can use the procedure under “To specify the illumination
duration” to configure the illumination duration as approxi­mately 1.5 seconds or 2.5 seconds.

❚

To turn the auto light switch on and off

While a setting screen (one on which a setting is flashing) is on the
display, hold down the L button for about two seconds to toggle
the auto light switch on (auto light switch on indicator displayed)
and off (no indicator displayed).

Normal operation enabled.

Digital display, illumination, alarms,
tones (alarms, hourly time signal),
and signal reception disabled.

All functions, including timekeeping,
disabled.

Auto Light
Switch On
Indicator

❚

Charging Precautions

Avoid charging the watch in the following locations, and anywhere
else where the watch may become very hot.

• On the dashboard of an automobile parked in the sun

• Very close to an incandescent light source or other sources of

heat

• In a location exposed to direct sunlight for long periods
Note that the display panel may become black under very high
temperatures. This is temporary, and the display will appear
normal again at lower temperatures.

Depending on the light source you are using, the
case of the watch may become quite hot during
charging. Take care to guard against burn injury after
charging.

❚

To charge the battery

Point the solar panel (display) of the watch at a light source.

• Remember that even a partial blockage of the solar cell reduces
charging efficiency.

Example: Positioning the watch

Solar Cell

• The illustration shows the resin band model.

❚

Positioning Your Arm Correctly

11

1

11

With the watch on
your wrist, position it
level with the ground.

• You should be wearing the watch on the outside of your wrist
when using the auto light switch.

• Make sure that the left (9 o’clock) and
right (3 o’clock) sides of the watch are
within ±15 degrees of being parallel
with the ground. The auto light switch
may not operate properly if the angle is
greater.

Important!

• The light may be difficult to see if you turn it on under bright
sunlight.

• If you press any button or if an alarm operation starts while the
display is illuminated, illumination will turn ofφ.

• Display illumination does not work while you are performing a time
calibration signal manual receive operation.

• You may hear humming sound from the watch while the display is
illuminated. This is caused by vibration of the EL panel used of
illumination, and does not indicate malfunction.

22

2

22

Rotate your arm so the watch
is angled at about 40 degrees,
so you can read its display.

At least
40
degrees

❚

Charging Guide

Starting from a full charge, the watch
should be able to continue operating
for about eight months without
further charging under the conditions
described below.

Daily Use (All time values are
approximate.)

• Display Illumination: 1.5 seconds

• Alarm: 10 seconds

• Signal reception: 16 minutes

• Display On: 18 hours

Making sure the watch is regularly
exposed to light ensures stable
operation.

• Charge Times Required to Advance to a Higher Level

Exposure Level

(Brightness)

Outdoor Sunlight

(50,000 lux)

Sunlight Through a

Window (10,000 lux)
Daylight Through a Window on

an Overcast Day (5,000 lux)

Indoor Fluorescent

Lighting (500 lux)

• Note that the above charging times are for reference only. Actual
charging time depends on a variety of environmental factors.

Auto Light Precautions

• Frequent use of the auto light can run down the battery.

• The auto light switch may cause the display to illuminate when
your sleeve covers the display of the watch.

• The display may not illuminate immediately when you angle the
watch towards your face. This does not indicate malfunction.

• The display remains illuminated for the currently set duration (1.5

or 2.5 seconds) only, even if you leave the watch angled towards
your face.

• The auto light switch is automatically disabled whenever battery
power is at Level 3 or loweρ.

• The display may illuminate unintentionally when you wear the
watch on the inside of your wrist, when you shake your arm, or
when you raise your arm. Be sure to turn off the auto light

switch whenever you do not need display illumination.

• Keep the auto light switch turned off whenever you are wearing
the watch on the inside of your wrist.

• Electro-static charge and magnetism can interfere with auto light

operation and even make operation impossible. If this happens
lower your arm to the starting position and then raise it again. If
you still have trouble with illumination, try lowering your arm down
to your side and then raise it to your face for reading.

Level 4 \ Level 3 \ Level 2 \ Level 1

101 hours

Required Daily Charging Time

•

The following is the daily
amount of charging required
each day to support the
operations under “Daily Use”.

Exposure Level

(Brightness)

Outdoor Sunlight

(50,000 lux)

Sunlight Through

a Window

(10,000 lux)

Daylight Through a

Window on an Overcast

Day (5,000 lux)

Indoor

Fluorescent

Lighting (500 lux)

Approximate Exposure Time

2 hours

5 hours

9 hours

– – – – – –

Approximate

Exposure

Time

5 minutes

24 minutes

48 minutes

8 hours

6 hours22 hours

30 hours109 hours

61 hours222 hours

2

❚

To specify the illumination duration

1. In the Timekeeping Mode,

hold down
two seconds.

• This will cause your Home
City code to flash on the
display.

2. Press the

times to display the
flashing seconds count.

AA

A for about

AA

CC

C button three

CC

Home City Code

(3 times)

Seconds

Operation Guide 2914

3. Press the

4. After the setting is the way you want, press the

• The watch will also exit the setting screen automatically if you

BB

B button to

BB

toggle the illumination
duration between about

1.5 seconds ( indicator)
and 2.5 seconds
( indicator).

AA

A

button to exit the setting screen.

do not perform any operation for about two or three minutes.

AA

How a Radio-controlled Watch Works

What is a radio-controlled watch?

Your radio-controlled watch is designed to receive a time
calibration signal that contains standard time data, and adjust its
current time setting accordingly.

Long-

Watch

wave time
calibration
signal

Signal data

Time data

Internally

Transmitter

Cesium

atomic

clock

After the watch receives the Standard Time signal, it performs
internal calculations to determine the current time. Because of
this, there may be an error of up to one second in the
displayed time.

Signal is received
using built-in antenna.

Watch decodes
received data
and converts it
to time data.

Decode

Time is adjusted
according to time
data.

Calibration Signal

• The Japanese calibration signal (Call Sign: JJY) is maintained by
the National Institute of Information and Communications
Technology (NICT). It is a long wave signal transmitted 24 hours a
day from the Mt. Otakadoya transmitter (40kHz) located in
Tamura-gun, Fukushima Prefecture, and from the Mt. Hagane
transmitter (60kHz) located on the border between Saga
Prefecture and Fukuoka Prefecture.

• The U.S. calibration signal (Call Sign: WWVB) is transmitted by
the National Institute of Standards and technology from Fort
Collins, Colorado.

Note that transmission of the time calibration signal may be
interrupted occasionally due to maintenance, lightning, etc.

Reception Range

This watch is designed to receive the standard time calibration signal of Japan (JJY) or of the United States (WWVB). The signal that is
received depends on the current Home City setting.

• For information about selecting a Home City, see “Configuring Home Time Settings”. For information about city codes, see the “World Time
City Code List”.

Home City

TYO, SEL

LAX, DEN, CHI, NYC

Japan Transmitter

Either the Mt. Otakadoya signal (40kHz) or the Mt. Hagane signal (60kHz)

Fort Collins, Colorado signal

1000km

Locations

Mt. Hagane

(60kHz)

• Under optimum conditions, the calibration signal should be
receivable up to 1,000 kilometers from the transmitter. Note
that the wave is relatively weak at distances greater than
500km, so reception may be poor at long distances.

• Geographic contours, nearby buildings, seasonal conditions, the time of day, can even make reception impossible even when you are within
range of the transmitter.

• Best reception is possible late at night.

500km

1000km

500km

Mt. Otakadoya

(40kHz)

• Under optimum conditions, the calibration signal should be

Transmitter

U.S. Transmitter
Location

3000km

1000km

Fort Collins

receivable up to 3,000 kilometers from the transmitter. Note
that the wave is relatively weak at distances greater than
1,000km, so reception may be poor at long distances.

Location

Reception is difficult and may even be impossible in the locations
described below. Avoid such locations when performing signal
reception.

• You should think of your watch operating like a radio or TV when it
is receiving the calibration signal.

Near high-voltage linesAmong or near buildings

Inside a vehicle

(automobile, train, plane, etc.)

In a location where there is
radio interference
(construction site, airport, etc.)

If you are experiencing problems with reception, move away
from the types of locations described above to a location with
better reception, and try again.

Next to a household appliance
or office equipment (TV, speaker,
fax, computer, cell phone, etc.)

Near mountains

Receiving the Calibration Signal

There are two methods you can use to receive the time calibration
signal.

Auto Receive (3 times per day)

When the Home City setting is TYO or SEL, the time calibration
signal is received automatically at 1:00, 2:00, and 3:00 each
morning.

• If both the 2:00 and 3:00 receive operations are unsuccessful, a
receive operation is performed at 4:00. If receive is still
unsuccessful, it is performed again at 5:00.

• If all five of the above receive operations are unsuccessful, a
receive operation is performed again at midnight the following
day.

When the Home City is NYC, CHI, DEN, or LAX, auto receive is
performed at midnight, and at 1:00 and 2:00 in the morning.

• If both the 1:00 and 2:00 receive operations are unsuccessful, a
receive operation is performed at 3:00. If receive is still
unsuccessful, it is performed again at 4:00.

• If all five of the above receive operations are unsuccessful, a
receive operation is performed again at 5:00.

Manual receive (You initiate reception using a button operation.)

The watch is set up for auto receive at the factory, so all you
need to do is to place it in a location that allows good
reception each night.

3

❚

To position the watch for optimum
reception

Remove the watch from your wrist and place it somewhere so its
top (12 o’clock side, where the antenna is located) is facing
approximately in the direction of the signal transmitter. Keep the
watch away from metal objects.

Resin band

Metal band

• Orienting the watch so it is sideways to the transmitter makes it
more difficult to receive the signal.

• Do not move the watch while it is receiving the calibration signal.

❚

Time Required for Reception

A calibration signal receive operation takes anywhere from about
two to five minutes.

• Note that when “AUTO” (Auto Select) is specified as the
transmitter selection mode, signal reception can take up to
12 minutes.

• See “Configuring Auto Receive Settings” for more information.

Operation Guide 2914

❚

To perform manual receive

In the Timekeeping Mode, hold

DD

down the

D button for about

DD

two seconds.

• The watch will beep and
reception will start. An indicator
will appear on the display to
indicate reception conditions.

❚

To interrupt reception

DD

Press the

D button.

DD

• All other buttons besides D are disabled during signal reception.

When reception is successful

The watch terminates reception and adjusts the current time. Next
it beeps and then displays the date and time that the adjustment
was performed.

• The watch will return to the Timekeeping Mode screen if you

press the D button or if you do not perform any operation for
about two or three minutes.

Reception Error (ERR Indicator)

The watch does not adjust its current time setting, and displays
“ERR” when signal reception is unsuccessful for some reason.

• The watch will return to the Timekeeping Mode screen if you

press the D button or if you do not perform any operation for
about two or three minutes.

❚

Receive Indicator

The receive indicator cycles from
“Unstable” through “Stable” as
shown below while reception is in
progress. How far it cycles depends
on the signal strength. Keep the
watch in a location where reception
is stable while reception is in
progress.

White-On­Black

Unstable

Black-On­White

• Even under optimum reception conditions, it can take about 10
seconds for reception to stabilize.

• Use the receive indicator to check reception status and to
determine the best location for signal reception.

• Note that weather, the time of day, surroundings, and other
factors can all affect reception.

Receive Indicator

Stable

❚

To view the last reception date and time

In the Timekeeping Mode, press the

• This causes the display to start alternating between the last
reception date screen and the last reception time screen at two­second intervals.

• “– – –” will appear in the digital display if the watch has not been
able to perform any signal reception successfully.

• To return to the Timekeeping Mode, press the D button again.

• The watch will return to the Timekeeping Mode automatically if

you do not perform any operation for about two or three minutes.

Last reception
date

Last reception
time

DD

D button.

DD

2 seconds

Configuring Auto Receive Settings

Use the procedure below to turn auto receive of the time
calibration signal on or off. When TYO (Tokyo) or SEL (Seoul) is
selected as your Home City, you can also specify the transmitter
selection mode, which controls which Japanese transmitter signal
should be used for time calibration.

• For information about selecting your Home City, see “Configuring
Home Time Settings”.

• The initial factory default settings for auto receive are Home City =
TYO (Tokyo); Auto Receive = On; Transmitter = AUTO

• The following procedure can be performed only when TYO, SEL,
NYC, CHI, DEN, or LAX is selected as the Home City.

❚

To configure auto receive settings

1. In the Timekeeping Mode,

• This causes the display to

• The watch will return to the

2. Hold down the

• This will cause the current

DD

press the

D button.

DD

start alternating between the
last reception date and time
screens.

Timekeeping Mode
automatically if you do not
perform any operation for
about two or three minutes.

AA

A button

for about two seconds.

auto receive setting to flash
on the display.

AA

DD

3. Use the

to cycle through the
available auto receive
settings.

4. When the setting is the

way you want, press the

AA

A button.

AA

• This will exit the setting
screen and return to the last
reception date and time
screens.

• To return to the Timekeeping
Mode, press the D button
again.

• The watch will return to the
Timekeeping Mode
automatically if you do not
perform any operation for
about two or three minutes.

D and

DD

BB

B buttons

BB

Auto Receive Settings when the Home City is TYO
or SEL

• AUTO

Auto receive turned on with automatic selection of either the
Mt. Otakadoya signal (40kHz) or the Mt. Hagane signal
(60kHz), whichever is strongest.

• J40

Auto receive turned on for the Mt. Otakadoya signal (40kHz).

• J60

Auto receive turned on for the Mt. Hagane signal (60kHz).

• OFF

Auto receive turned off.

Auto Receive Settings when the Home City is NYC,
CHI, DEN, or LAX

• ON

Auto receive turned on for the Ft. Collins, Colorado signal.

• OFF

Auto receive turned off.

Calibration Signal Reception
Precautions

• Auto reception can be performed while the watch is in the
Timekeeping Mode or World Time Mode only.

• Reception cannot be performed while Timer Mode countdown is in
progress.

• Pressing any button while auto reception is in progress will cause
the watch to beep and then exit the receive operation.

• Make sure you are within the range of the calibration signal
transmitter before performing the reception operation. Remember
that geographic contours, nearby buildings, seasonal conditions,
the time of day, can even make reception impossible even when
you are within range of the transmitter.

• Proper reception may be impossible if there is something blocking
the signal. If reception is unsuccessful, try again.

• This watch is designed to adjust its current time setting in
accordance with the calibration signal transmitted in Japan and
the United States only. It operates like a standard (non-radio
controlled) watch outside of the range of the receivable time
calibration signal transmitters.

• When the watch is unable to adjust its time signal using the
calibration signal for some reason, timekeeping accuracy is within

±15 seconds per month.

• Strong electrostatic charge can cause timekeeping error.

• Signal reception is cancelled if the alarm starts to sound while it is

being performed.

• The watch’s calendar shows dates up to the year 2099.
Attempting a receive operation after that causes an error.

4

Troubleshooting

The watch cannot receive the time calibration signal.

• Is the signal being transmitted?
Though the Japanese calibration signal (Call Sign: JJY) is
continually transmitted by the National Institute of Information and
Communications Technology (NICT) in theory, it may sometimes
be interrupted for periodic maintenance work, or because of
lightning or other problems.

• Are you within the reception range of a transmitter?
See “Reception Range” for information about areas where the
watch can receive the signal.

• Is there something in the immediate area that may be interfering
with reception?
Even if you are within the reception range of a transmitter, objects
between you and the transmitter or electrical noise can interfere
with reception. Avoid such areas during signal reception. See
“Location” for more information.

• Do you have the correct Home City code selected?
Remember that auto receive is not performed unless TYO
(Tokyo), SEL (Seoul) NYC (New York), CHI (Chicago), DEN
(Denver), or LAX (Los Angeles) is selected as the Home City.
Select the correct Home City code using the procedure under
“Configuring Home Time Settings”.

• Is auto receive turned off (OFF)?
Use the procedure under “Configuring Auto Receive Settings” to
turn on auto receive.

• Is the watch in any mode other than the Timekeeping Mode or
World Time Mode during the auto receive times (midnight, 1:00
a.m., 2:00 a.m., 3:00 a.m., 4:00 a.m., and 5:00 a.m.)?
Auto receive is performed only when the watch is in the
Timekeeping Mode or World Time Mode. It is not performed if the
watch is in any other mode.

Operation Guide 2914

Time calibration signal reception is successful, but the hourly
time signal and current time are slightly off.

• After the watch receives the time calibration signal, it performs an
internal decoding process before updating its time setting.
Because of this, the time setting may be slightly off (within one
second).

Time calibration signal reception is successful, but the current
time is one hour fast.

• Do you have summer time (DST) turned on (ON)? Use the
procedure under “Configuring Home Time Settings” to turn off
summer time.

Time calibration signal reception is successful, but the current
time setting is wrong.

• Is the correct city code selected for your Home City?
If you are in Japan, you should have TYO selected for your Home
City. For other areas, select the correct Home City code using the
procedure under “Configuring Home Time Settings”.

The auto receive ON/OFF settings don’t appear when
configuring auto receive settings.

• Auto receive ON/OFF settings do not appear on the display
unless TYO (Tokyo), SEL (Seoul), NYC (New York), CHI
(Chicago), DEN (Denver), or LAX (Los Angeles) is selected as the
Home City. Use the procedure under “Configuring Home Time
Settings” to select your correct Home City.

The auto receive AUTO, J40, and J60 settings do not appear
when configuring auto receive settings.

• The AT, J40, and J60 transmitter selection mode options are
available only when TYO (Tokyo) is selected as the Home City
code. Use the procedure under “Configuring Home Time Settings”
to select your correct Home City.

What time is auto receive performed?

• Auto receive is performed in the middle of the night, when
reception conditions are best. Before going to bed at night, place
the watch near a window, with its 12 o’clock position facing in the
general direction of the transmitter.

How can I perform manual receive?

• Hold down the lower right D button for about two seconds. The
watch will beep to indicate that manual receive has started. Place
it near a window, with its 12 o’clock position facing in the general
direction of the transmitter.

How can I view the last reception date and time?

• In the Timekeeping Mode, press the lower right D button. This
will display the date and time that the time calibration signal was
last received successfully. To return to the Timekeeping Mode,
press the D button again. See “To view the last reception date
and time” for more information.

• Check the auto signal reception setting whenever you have
problems with signal reception or when the time setting produced
by signal reception is incorrect.

• The initial factory default configuration of the reception settings
are shown below. You do not need to change these settings if you
use the watch in Japan.

Auto Receive

Home City

Summer Time

Auto Japan transmitter select
(40kHz/ 60kHz)

Tokyo

Auto switching in accordance
with signal data

World Time Mode

World time lets you display the current time in any one of 30 cities
(29 time zones) around the world.

• When you enter the World Time Mode, the screen for the city that
was displayed when you last exited the mode appears first.

• The seconds count in the World Time Mode is linked with the
Timekeeping Mode seconds count.

• The same 12-hour/24-hour format you select for the Timekeeping
Mode time is also applied in the World Time Mode.

Important!

• If the World Time Mode time is incorrect, check the current time
settings in the Timekeeping Mode and the World Time city
settings.

• For more information, see “Configuring Home Time Settings”.

❚

To search for a city code

City Code

DD

D (westward) or

DD

(Eastward)

(Westward)

In the World Time Mode, press the
(eastward) button.

• This scrolls the available city codes.

• Holding down the B and D buttons scrolls at high speed.

Current Time in
Selected City

BB

B

BB

Using Summer Time (DST)

Summer time, or Daylight Saving Time (DST) as it is known in
some countries, calls for setting clocks ahead one hour during the
summer season. Note that the use of summer time depends on
the country and even the local area.

❚

To turn summer time on or off

1. In the World Time Mode,

2. Hold down the

• This toggles summer time on and off.

• The “DST” indicator appears on the display and timekeeping

• You can turn summer time on or off independently for each

• Turning on summer time for your home time city causes the

DD

D and

DD

BB

B buttons

BB

AA

A button

AA

use the
to display the screen for
the city code whose
summer time setting you
want to change.

for about two seconds.

is advanced by one hour when summer time is turned on.

World Time Mode city. Note, however, that you cannot turn on
summer time for the “GMT” city code.

time shown in the Timekeeping Mode to be advanced by one
hour.

DST Indicator

World Time City Code List

City

GMT

–11

–10

–9

–8

–7

–6

–5

–4

–3

–2

–1

Greenwich Mean Time

+0

+0

+1

+1

+2

+2

City Name

Honolulu

Anchorage

Los Angeles

Denver

Chicago

New York

Caracas

Rio de Janeiro

London

Paris

Berlin

Athens

Cairo

Code

Differential

– – –

HNL

ANC

LAX

DEN

CHI

NYC

CCS

RIO

– – –

– – –

GMT

LON

PAR

BER

ATH

CAI

• The contents of the above table are current as of June 2004.

• Time differentials in the above table are in accordance with

Universal Time Coordinated (UTC).

City

Code

JRS

JED

THR

DXB

KBL

KHI

DEL

DAC

RGN

BKK

HKG

SEL

TYO

ADL

SYD

NOU

WLG

GMT

Differential

+2

+3

+3.5

+4

+4.5

+5

+5.5

+6

+6.5

+7

+8

+9

+9

+9.5

+10

+11

+12

City Name

Jerusalem

Jeddah

Teheran

Dubai

Kabul

Karachi

Delhi

Dakar

Yangon

Bangkok

Hong Kong

Seoul

Tokyo

Adelaide

Sydney

Noumea

Wellington

5

Operation Guide 2914

Using the Alarm and Hourly Time Signal

Alarms

❚

Daily Alarms (AL1 to AL4)

The watch beeps for about 10 seconds when an alarm time is
reached.

❚

Snooze Alarm (SNZ)

With the snooze alarm, the watch beeps for 10 seconds when the
alarm time is reached, and up to seven times at five-minute
intervals thereafter (approximately 30 minutes total). Pressing any
button stops the beeper, but the alarm will sound again after five
minutes.

❚

To set an alarm time

1. In the Alarm Mode, use the

DD

D button to scroll

DD

through the alarm screens
until the one whose
setting you want to
change is displayed.

Alarm Number

(Next alarm)

2. Hold down the

for about two seconds
until the hour digits start
to flash on the display.

• This also causes the alarm on
indicator to appear and
automatically turns on the
alarm.

3. Use the

select the digits you want
to change.

• Each press of the C button
moves the flashing between
the hour digits and minute
digits.

AA

A button

AA

CC

C button to

CC

Hour

Alarm on indicator

時分

(

4. Use the

• Holding down either button

Repeat steps 3 and 4 for the hour digits and the minute
digits to set the time you want.

• When setting the hour, make sure you specify AM (A) or PM (P)
correctly when using 12-hour timekeeping, or that you specify the
correct 24-hour time.

• The same 12-hour/24-hour format you select for your home time
is also applied in the Alarm Mode.

5. When the setting is the way you want, press the

• This exits the setting screen.

• The display also will exit the setting screen automatically if

DD

D (+) and

DD

buttons to change the
currently selected digits.

changes the setting at high
speed.

button.

you do not perform any operation for about two or three
minutes.

BB

B(–)

BB

Decrease

(Increase)

AA

A

AA

)

❚

To turn an alarm on and off

1. In the Alarm Mode, use the

screen for the alarm you want to turn on or off.

2. Press the

BB

B button to toggle the displayed alarm on

BB

(alarm on indicator displayed) or off (alarm on indicator
not displayed). Turning on the snooze alarm will cause
the “SNZ” indicator to appear on the display.

Alarm 1

DD

D button to display the

DD

Snooze Alarm

Alarm On IndicatorAlarm On Indicator

Snooze On Indicator

Alarm 1

(AL1)

Hourly Time
Signal (SIG)

❚

To stop the alarm beeper

Press any button.

• In the case of the snooze alarm the alarm will sound again in
about five minutes. “SNZ” flashes on the display during the
five-minute period between snooze alarms (indicating that the
alarm will sound again).

• The snooze alarm will be canceled automatically when any of the
following occurs while the SNZ indicator is flashing on the display.

• If you turn off the snooze alarm

• If you display the snooze alarm setting screen

• If you display the Timekeeping Mode setting screen

❚

To test the alarm

In the Alarm Mode, hold down the D button to sound the alarm.

Alarm 2

(AL2)

Snooze Alarm

(SNZ)

Alarm 3

(AL3)

Alarm 4

(AL4)

Hourly Time Signal

The hourly time signal causes the watch to beep twice every hour
on the hour.

❚

To turn the hourly time signal on and off

1. In the Alarm Mode, use the

hourly time signal screen.

2. Press the

• Turning on the hourly time signal causes the hourly time signal

BB

B button to toggle the hourly time signal on

BB

or off.

indicator to appear on the display. The watch will beep twice
every hour on the hour.

Hourly Time Signal Screen

DD

D button to display the

DD

Hourly Time Signal
On Indicator

Stopwatch Mode

The stopwatch measures elapsed time in units of 1/100 second up
to 23 hours 59 minutes, 59.99 seconds (24 hours). When the
maximum limit is reached, the elapsed time automatically returns
to zero and timing continues from there.

❚

Performing Stopwatch Operations

In the Stopwatch Mode, press the
elapsed time measurement.

• During elapsed time measurements, segments in the graphic
dials appear and disappear to indicated the passage of time.

Minutes

• Pressing the B button while timing is being performed

freezes the current elapsed time on the display and
displays the “SPL” (split) indicator, while elapsed timing
continues internally.

• Changing to another mode while a split time is displayed

clears the split time.

• Pressing the B button while elapsed time measurement is

stopped resets the stopwatch to all zeros.

CC

C button to start and stop

CC

Seconds Hours

(Split/Reset)

1/100
Second

(Start/Stop)

❚

Elapsed Time Measurement

Stop ResetStart

Cumulative Elapsed Time Measurement

Pressing the D button to restart the stopwatch without resetting it
to all zeros causes the elapsed time measurement to resume from
where it was last stopped.

❚

Split Time Measurement

Record Split Release Split ResetStopStart

Split Time Display

Clears split
time.

Split Indicator

❚

1st and 2nd Place Finishers

Start 1st finish

(Displays time
of 1st finish.)

2nd finish Displays time

of 2nd finish.

Reset

6

Timer Mode

You can set the start time of the time in the range of 1 to 60
minutes, in units of one minute. The watch beeps for 10 seconds
when the end of the countdown is reached.

❚

To set the timer time

1. In the Timer Mode, hold

AA

down

A for about two

AA

seconds.

• This will cause the minute
digits of the timer start time to
flash.

Minutes

Operation Guide 2914

3. After start time is the way

you want, press the
button.

• This exits the setting screen.

• The watch will also exit the

setting screen automatically if
you do not perform any
operation for about two or
three minutes.

AA

A

AA

❚

Using the Timer

In the Timer Mode, press the

• Each press of the D button starts or stops the countdown.

• The timer counts down in 1/10 second units.

• During elapsed time measurements, segments in the graphic

dials appear and disappear to indicated the passage of time.

Minutes

DD

D button.

DD

Seconds

(Reset)

1/10 second

(Start/Stop)

❚

End of Countdown

The watch beeps for 10 seconds when the end of the countdown
is reached.

❚

To stop the time up beeper

Press any button while the beeper is sounding to stop it.

2. Use the

• Holding down either button

• You can set a start time in the

DD

D (+) and

DD

buttons to change the
start time.

scrolls the start time setting at
high speed.

range of 1 minute to 60
minutes.

BB

B (–)

BB

(Back)

(Forward)

Configuring Home Time Settings

Home time settings include your Home City (the city where you will
normally use the watch), the current time and date in your Home
City, and other settings.

• Use the Timekeeping Mode to configure home time settings.

• Also use the following procedure when you want to turn Power

Saving on or off.

❚

To configure home time settings

1. In the Timekeeping Mode,

hold down the
for about two seconds.

• This will cause the city code
currently selected as the
Home City to flash on the
display.

AA

A button

AA

Home City Code

2. Use the

button and the
(eastward) button to scroll
through the city codes
until the one you want to
select is displayed.

• See the “World Time City
Code List” for information
about city codes.

• Holding down either button
scrolls at high speed.

3. When the city code you

want is displayed, press

CC

the

C button.

CC

• This will display the summer
time (DST) setting screen.

DD

D (westward)

DD

BB

B

BB

TYO = Tokyo

Eastward

(

(Westward)

• Pressing the B button while the countdown is stopped
resets the display to the start time.

• Pressing the D button again while the timer countdown is
stopped restarts the countdown.

4. Press the

)

• A (AUTO)

This setting enables the auto summer time setting, which
turns summer time on or off in accordance with the received
time calibration signal.

• This setting uses Japan summer time data when TYO is
selected as the Home City, and U.S. summer time data
when NYC, CHI, DEN, or LAX is selected as the Home
City.

• OF (OFF)

This setting turns off summer time and returns to normal
timekeeping.

• On (ON)

This setting turns on summer time and advances the current
time by one hour.

• Only OFF or ON can be selected if the current Home City code is
a setting other than HKG, TYO, SEL, NYC, CHI, DEN, LAX, ANC,
or HNL.

DD

D button to

DD

cycle through the
available summer time
(DST) settings until the
one you want to select is
displayed.

5. When the summer time

setting is the way you
want, use the
cycle the display through
the settings shown below.

Home City

Code

Power Saving

Day

CC

C button to

CC

Summer Time

Month Year

Minute

12/24-hour

Timekeeping

Seconds

Hour

7

Operation Guide 2914

6. While the 12/24-hour

timekeeping setting is
flashing, press the
button to toggle between
12-hour (“12H”) and
24-hour (“24H”)
timekeeping.

7. While the seconds are

selected, press the
button to reset them to 00
in accordance with the
time signal on the radio,
TV, etc.

• Pressing the D button while
the seconds count is in the
range of 30 to 59 resets it to
00 and also adds 1 to the
minutes. Pressing the D
button in the range of 00 to 29
resets the seconds count
without changing the minutes.

• Pressing the B button while
the seconds count is flashing
changes the display
illumination duration. See “To
specify the illumination
duration” for more information.

DD

D

DD

8. While the hour, minutes,

year, month, or day setting
is flashing, use the

BB

and

B (–) buttons to

BB

change the setting.

Indicates 12-hour or
24-hour timekeeping.

DD

D

DD

Resets to 00.

• Holding down either button
changes the setting at high
speed.

• When setting the hour, make
sure you specify AM (no
indicator) or PM (P) correctly,
or that you specify the correct
24-hour time.

• You can set a year in the range of 2000 to 2099. The day of
the week is set automatically in accordance with the date you
set.

• The watch automatically makes adjustments for leap years
and month lengths.

9. While the Power Saving

setting is flashing, press

DD

the

D button to toggle it

DD

on (ON) or off (OF).

• If you turn on Power Saving,
the Power Saving indicator
will be on the display when
you exit the setting screen.

Use the C button to select each of the settings and the D and

B buttons to change them.

DD

D (+)

DD

Minutes

Hour Year

(Back)

(Forward)

10.

When all of the settings are the way you want, press the

AA

A button.

AA

• This exits the setting screen.

• The display also will exit the setting screen automatically if

you do not perform any operation for about two or three
minutes.

8