SEIKO 72B7, 62B7 Instruction Manual

7B62 / 7B72 BSJ7BCC-A2102

Solar Radio Signal for 5 Areas Around the World (Japan, China, U.S.A., Germany, UK)

C-25

7B62 / 7B72

INSTRUCTIONS

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HOW TO SET THE TIME (RADIO SIGNAL RECEPTION)

Automatic reception and manual reception

Radio signal reception range: Japan (JJY)

Radio signal reception range: China (BPC)

Radio signal reception range: U.S.A. (WWVB)

TIME DIFFERENCE ADJUSTMENT FUNCTION

Time difference adjustment function (When using overseas)

Time difference adjustment function characteristics

TO PRESERVE THE QUALITY OF YOUR WATCH

How to conduct manual reception (Receive a radio signal manually)

Automatic hand position adjustment function (Adjustment of preliminary positions of hour, minute and seconds hands)

Preliminary position adjustment of the date

For proper and safe use of your SEIKO watch,

please read carefully the instructions in this

booklet before using it.

Keep this manual handy for easy reference.

* Length adjustment service for metallic bands is available at the retailer from

whom the watch was purchased. If you cannot have your watch repaired by the retailer from whom the watch was purchased because you received the watch as a gift, or you moved to a distant place, please contact SEIKO CUSTOMER SERVICE CENTER. The service may also be available on a chargeable basis at other retailers, however, some retailers may not undertake the service.

* If your watch has a protective film for preventing scratches, make sure to peel

it off before using the watch. If the watch is used with the film on it, dirt, sweat, dust, or moisture may be attached to the film and may cause rust.

CONTENTS

1 HOW TO USE

Handling cautions ............................................ 4

Characteristics ................................................ 8

Names of the parts and their functions .......... 10

How to use the button .................................... 12

Crown ............................................................ 13

2 BEFORE USE

Before Use .................................................... 14

Setting the time and date by receiving a radio

signal ............................................................. 16

Mechanism of radio signal reception ......... 16

Reception environment ................................. 18

Radio signal reception range indication ..... 18

Radio signal reception range: Germany

(DCF77), UK (MSF) ................................... 22

To improve radio signal reception .............. 23

...... 17

....... 19

...... 20

Environments in which it is difficult to

receive a radio signal ................................. 24

How to check the reception status ................. 26

How to display the reception results .......... 26

............................................ 28

Setting the time difference (Setting the radio

signal transmitting station) ............................. 29

List of time zone differences in major regions

of the world .................................................... 31

Time zones and time differences ............... 32

Time difference adjustment Q&A ............... 33

..... 21

.. 28

5 SOLAR CHARGING FUNCTION

Charging the battery ...................................... 34

How to charge the battery .......................... 34

Guide to charging times ............................. 35

About energy ................................................. 36

Energy depletion forewarning function (Twosecond interval movement and Five-second

interval movement) .................................... 36

Power save function .................................. 37

Daily care ...................................................... 38

Performance and type ................................... 39

Lumibrite ....................................................... 40

Power Source ................................................ 41

Water resistant performance ......................... 43

Magnetic resistant performance .................... 44

Band .............................................................. 46

How to use tri-fold type clasp for leather band

(Special clasps) ............................................. 48

After sales service ......................................... 54

7 TROUBLESHOOTING

............................... 56

When a radio signal cannot be received ........ 58

How to manually set the time ..................... 59

How to manually set the date ..................... 61

Preliminary position ....................................... 64

......................... 64

...... 64

How to set the preliminary position ................ 65

Set the preliminary position for the date,

and the hour and minute hands. ................ 65

Troubleshooting ............................................ 69

In case of an abnormal movement ................ 76

Reset the system ....................................... 76

8 SPECIFICATIONS

Specifications ................................................ 78

HOW TO USE

Handling cautions

b WARNING

Please note that there is a risk of serious consequences such as severe injury if the following safety regulations are not strictly observed.

Immediately stop wearing the watch in following cases:

○ If the watch body or band becomes edged by corrosion etc. ○ If the pins protrude from the band.

* Immediately consult the retailer from whom the watch was purchased or SEIKO CUSTOMER SERVICE

CENTER.

Keep the watch and accessories out of the reach of babies and children.

Care should be taken to prevent a baby or a child accidentally swallowing the accessories. If a baby or child swallows the battery or accessories, immediately consult a doctor, as it will be harmful to the health of the baby or child.

Do not remove the secondary battery from the watch.

* About the secondary battery → Power Source → P.41

Replacement of the secondary battery requires professional knowledge and skill. Please ask the retailer from whom the watch was purchased for replacement of the secondary battery. Installation of an ordinary silver oxide battery can generate heat that can cause bursting and ignition.

Please note that there is a risk of minor injury or material damage if the following safety

b CAUTION

regulations are not strictly observed.

Avoid the following places for wearing or keeping the watch:

○ Places where volatile agents (cosmetics such as polish remover, bug repellent, thinners etc.) are

vaporizing

○ Places where the temperature drops below

5°C or rises above 35°C for a long time

○ Places affected by strong magnetism or static

electricity

If you observe any allergic symptoms or skin irritation

Stop wearing the watch immediately and consult a specialist such as a dermatologist or an allergist.

Other cautions

○ For adjusting the length of the metallic band, specialized knowledge and expertise are necessary.

Therefore, in such a case, contact the retailer from whom the watch was purchased. If you attempt to adjust the metallic band, injury may occur to your hand or fingers, or parts of the band may be

lost.

○ Do not disassemble or tamper with the watch. ○ Keep the watch out of the reach of babies and children. Extra care should be taken to avoid risks

of any injury or allergic rash or itching that may be caused when they touch the watch. ○ When disposing of used batteries, follow the instructions of your local authorities. ○ If your watch is of the fob or pendant type, the strap or chain attached to the watch may damage

your clothes, or injure the hand, neck, or other parts of your body.

○ Places affected by strong vibrations ○ Places of high humidity ○ Dusty places

HOW TO USE

b WARNING

Do not use the watch in scuba diving or saturation diving.

The various tightened inspections under simulated harsh environment, which are usually required for watches designed for scuba diving or saturation diving, have not been conducted on the water resistant watch with the BAR (barometric pressure) display. For diving, use watches specifically designed for diving.

b CAUTION

Do not pour running water directly from faucet.

The water pressure of tap water from a faucet is high enough to degrade the water resistant performance of a water resistant watch for everyday life.

Do not turn or pull out the crown when the watch is wet.

Water may get inside of the watch.

* If the inner surface of the glass is clouded with condensation or water droplets appear

inside of the watch for a long time, the water resistant performance of the watch is deteriorated. Immediately consult the retailer from whom the watch was purchased or SEIKO CUSTOMER SERVICE CENTER.

Do not leave moisture, sweat and dirt on the watch for a long time.

Be aware of a risk that a water resistant watch may lessen its water resistant performance because of deterioration of the adhesive on the glass or gasket, or the development of rust on stainless steel.

Do not wear the watch while taking a bath or a sauna.

Steam, soap or some components of a hot spring may accelerate the deterioration of water resistant performance of the watch.

b CAUTION

HOW TO USE

Energy Depletion

Forewarning Function...........

Reception level display

[Manual reception]

High reception level (50-second position)

Low reception level (40-second position)

Unable to receive radio signals (20-second position)

* Reception level display → P.57

Reception result display

[Check of reception result]

Reception successful (10-second position)

Reception failed (20-second position)

* How to display the reception results

→ P.26

Standard radio signal display

Display (Country with radio signal

transmitting station)

Display position

JJY (Japan) 9-second position BPC (China) 8-second position WWVB (U.S.A.) 53-second position DCF (Germany) 1-second position MSF (UK) 0-second position

* Time difference adjustment function → P.28 * List of time zone differences in major regions of the world

→ P.31

HOW TO USE

This is a solar-driven, radio signal-adjusted watch.

• This watch displays the precise time by receiving radio signals conveying time information.

• This watch can receive radio signals from Japan, China, U.S.A., Germany, and the UK.

■ Radio Signal Receiving

Function....................................

→ P.16

■ Reception Level Indication

Function....................................

→ P.57

■ Display Function of Radio

Signal Reception Results........

→ P.26

■ Time Difference Adjustment Function (Selecting

Transmitting Station)...............

→ P.28

Characteristics

The watch maintains the precise time by automatically receiving radio signals on official standard frequencies. Manual reception of radio signals is also possible. This can receive radio signals from Japan (2 stations), China, U.S.A., Germany, and the UK. (Select the transmitting station in the time difference adjustment function.)

The movement of the seconds hand indicates the radio signal reception level during radio signal reception attempts. (Only manual reception)

The movement of the seconds hand indicates radio signal reception results (Yes/No).

Set the time difference in order to display the local time overseas. Additionally, set the time difference to enable reception of the radio signal in areas in which it is available.

■ Solar Charging Function..........

→ P.34

■

→ P.36

■ Power Save Function...............

→ P.37

■ Automatic Hand Position

Alignment Function..................

→ P.64

A solar cell underneath the dial converts any form of light into “electrical energy” to charge it. Once fully charged, the watch continues to run for approximately 9 months.

The movement of the seconds hand indicates that the battery should be charged.

This watch is equipped with a function which can suppress energy consumption when it is left without receiving an adequate light source for a certain length of time.

When the hand positions display an incorrect time as a result of external influences such as magnetism, the watch automatically corrects the hand misalignment.

HOW TO USE

Names of the parts and their functions

Minute hand

Hour hand

Seconds hand

Date

Crown

• Normal position: Reception results confirmation → P.26, Manual reception → P.56

• First click position: Time difference setting → P.29, Manual date setting → P.61

• Second click position: Manual time setting → P.59, Reset the system → P.76

Button → P.12

* The operation method of the button varies with

the functions being used. Follow the instructions of each section of this booklet.

●

HOW TO USE

●

While pressing the crown in, turn it in the direction indicated by the arrow.

The seconds hand moves

at one-second intervals.

The seconds hand moves

at two-second intervals.

The seconds hand moves

at five-second intervals.

The seconds

hand is stopped.

The watch is

sufficiently charged.

The power save function is activated. → P.

Check the movements of the seconds hand

after releasing the Power Save mode.

When the time and

date are correct

Radio signal reception range indication → P. Environments in which it is difficult to receive a radio signal → P.

HOW TO USE

Some models may have a button which is recessed in the watch case to prevent accidental input. Shape of the button differs depending on the design of the watch.

Upper half of the button is covered.

Press the lower half of the button or press the hollow in the middle using an object with a long tapered tip.

How to use the button

The button is covered except the hollow in the middle.

Press the hollow in the middle using an object with a long tapered tip.

The button is recessed in the watch case.

Press the hollow in the middle using an object with a long tapered tip.

Crown

There are two types of crowns, a normal crown and a screw down crown. Please check the type of the crown of your watch.

The crown turns.

The crown

does not

turn.

* By locking the crown by screw, a screw down crown can prevent malfunction and increase water resistance. * Be careful not to screw the crown in by force as it may damage the slots of the crown.

Unlock the crown before operating it.

Unscrew

Pull out the crown and operate it.

Normal crown

Screw down crown

After operating the crown, lock it.

Rotate while pressing the crown in.

HOW TO USE

BEFORE USE

Before Use

Checking the Charging Status

When the movement of the seconds hand shows an energy depletion state, the battery requires charging.

The charged energy is depleted.

The energy stored in the watch runs low.

* If the seconds hand does not move at one-second intervals even after fully charging the battery, refer to

“Charging the solar battery” in Troubleshooting on P.72

→ P.36

Charge the

battery

sufficiently.

How to charge

the battery

→ P.34

Checking the time and date

* When adjusting the time or date, refer to the following pages regarding the procedures.

Use the watch without

adjustment.

When the radio

signal can be

When the time

and date are

incorrect

* When the watch does not display the correct time and date even after successfully receiving a radio signal, refer

to Troubleshooting.→ Misalignment of the time and hand positions P.72, and Misalignment of the date P.74

Time

difference

setting

confirmation

→ P.29

received

When a radio signal cannot

be received

Setting the time and date

by receiving a radio

signal → P.56

Manually set the time

→ P.59

Manually set the date

→ P.61

BEFORE USE

Setting the time and date by receiving a radio signal

■ Mechanism of radio signal reception

Official standard

frequency

When the watch does not display the correct time and date even after successfully receiving a radio signal, refer to Troubleshooting. “Misalignment of the time and hand positions” → P.72, “Misalignment of the date” → P.74

The radio-controlled watch displays the precise Time and Date by automatically receiving and synchronizing itself with the radio signal of an official standard frequency.

HOW TO SET THE TIME (RADIO SIGNAL RECEPTION)

Transmitting

Station

Cesium

Atomic

Clock

Time signal transmitted by a standard frequency is based on a super accurate “Cesium Atomic Clock” that may have a 1 second loss or gain per one hundred thousand years.

Radio-controlled watch

Receive radio signals through

the antenna inside the watch

Analyze time information

Display the current Time and

Date

■ Automatic reception and manual reception

●

Automatic reception

This watch sets the time and date by automatically receiving a radio signal at a fixed time. It automatically receives a radio signal before 2:00 AM, 3:00 AM and 4:00 AM.

* When the reception is successful, the watch finishes the automatic reception.

• Place the watch in a place where it can easily receive a radio signal (by the window, etc.).

• Do not move the watch during the radio signal reception. “To improve radio signal reception” → P.23

●

Manual reception

This watch can receive a radio signal arbitrarily at any time other than the automatic reception mode.

“How to conduct manual reception” → P.56

* Radio signal reception results depend on the receiving environment. “Environments in which it is difficult to receive

a radio signal” → P.24

* The watch cannot receive a radio signal outside the radio signal reception range. “Radio signal reception range

indication” → P.18

* When the time difference is set for a region other than radio signal reception range, a radio signal cannot be

received. Check the setting of the time difference. “Setting the time difference (Setting the radio signal transmitting station)” → P.29

HOW TO SET THE TIME (RADIO SIGNAL RECEPTION)

Reception environment

■ Radio signal reception range indication

This watch receives standard radio signals from Japan (2 stations), China, U.S.A., Germany and UK. Select the transmitting station in the time difference adjustment function to switch the standard radio signal

to receive.

HOW TO SET THE TIME (RADIO SIGNAL RECEPTION)

“Setting the time difference (Setting the radio signal transmitting station)” → P.29

Germany (DCF77), UK (MSF)

P.22

China (BPC)

P.20

Japan (JJY)

P.19

U.S.A.

(WWVB)

P.21

■ Radio signal reception range: Japan (JJY)

The reception range from the transmitting station is approximately 1,000 km (1,000 km radius of the transmitting station).

JJY is operated by the National Institute of Information and Communications Technology (NICT). JJY is transmitted from two stations in Japan. Each station transmits JJY in a different frequency.

Hagane-yama transmitting station (60 kHz)

1,000 km

Ohtakadoyayama transmitting station (40 kHz)

1,000 km

Fukushima : Ohtakadoya-yama transmitting

Kyushu : Hagane-yama transmitting station

* NICT: National Institute of Information and

Communications Technology

* Even within the reception range, weather conditions,

terrain, buildings, and orientation may mean that reception is not possible. “Environments in which it is difficult to receive a radio

signal” → P.24

station Frequency: 40 KHz

Frequency: 60 KHz

HOW TO SET THE TIME (RADIO SIGNAL RECEPTION)

■ Radio signal reception range: China (BPC)

Fort Collins transmitting station Frequency (60 KHz)

■ Radio signal reception range: Germany (DCF77), UK (MSF)

Each reception range from the transmitting station of DCF77 and MSF is approximately 1,000 km and 500 km (1,000 km and 500 km radius of the each transmitting station). There are four time zones within the reception range.

Approx. 500 km

The reception range from the transmitting station is approximately 1,500 km (1,500 km radius of the transmitting station).

BPC is operated by NTSC.

HOW TO SET THE TIME (RADIO SIGNAL RECEPTION)

Shangqiu National Time Service Center (68.5 kHz)

1,500 km

Shangqiu National Time Service Center Frequency: 68.5 kHz

* NTSC: National Time Service Center

* The watch may be able to receive radio signals outside

a reception range if the receiving conditions are favorable.

* Even within the reception range, weather conditions,

terrain, buildings, and orientation may mean that reception is not possible. “Environments in which it is difficult to receive a radio

signal” → P.24

■ Radio signal reception range: U.S.A. (WWVB)

The reception range from the transmitting station is approximately 1,500 km (1,500 km radius of the transmitting station). There are four time zones within the reception range.

1,500 km

WWVB is operated by NIST.

Fort Collins transmitting station Frequency: 60 kHz

* NIST: National Institute of Standards and Technology

* The watch may be able to receive radio signals outside

a reception range if the receiving conditions are favorable.

* Even within the reception range, weather conditions,

terrain, buildings, and orientation may mean that reception is not possible. “Environments in which it is difficult to receive a radio

signal” → P.24

* Use of automatic reception is recommended, as this

time frame is optimal for automatic reception.

HOW TO SET THE TIME (RADIO SIGNAL RECEPTION)

Anthorn transmitting station

(60.0 kHz)

HOW TO SET THE TIME (RADIO SIGNAL RECEPTION)

Mainflingen transmitting station (77.5 kHz)

1,000 km

DCF77 is operated by PTB.

Southeastern Frankfurt Mainflingen transmitting station (77.5 kHz)

* PTB: Physikalisch-Technische Bundesanstalt

MSF is operated by NPL.

Northern England Anthorn transmitting station Frequency: 60.0 kHz

* NPL: National Physical Laboratory

* Even within the reception range, weather conditions,

terrain, buildings, and orientation may mean that reception is not possible. “Environments in which it is difficult to receive a radio

signal” → P.24

* Use of automatic reception is recommended, as this

time frame is optimal for automatic reception.

■ To improve radio signal reception

●

Place the watch in a place where it can easily receive a radio signal such as near a window.

The antenna is embedded at the 9 o’clock position of the watch. Turning the antenna toward the outside of a window or the direction facing transmitting stations helps improve radio signal reception.

* Locations of transmitting stations

“Radio signal reception range indication” → P.18

●

Do not move the watch while it is receiving radio signals.

To enhance the reception of radio signals, do not move the watch or do not change the orientation of the watch while it is receiving radio signals.

* If the button or crown is operated while the watch is receiving a

radio signal, the reception will be cancelled.

●

The place where the watch is put before going to bed

Place the watch next to a window facing in the direction of a transmitting station before bedtime because

automatic reception is performed late at night. The standard radio signal is influenced by the distance from the transmitting station, as well as by terrain (including buildings) and weather conditions. Also, please search for a place to easily receive radio signals when attempting reception.

Antenna

HOW TO SET THE TIME (RADIO SIGNAL RECEPTION)

+ 14 hidden pages