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Thank you very much for choosing a SEIKO watch.

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.

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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

3 HOW TO SET THE TIME (RADIO SIGNAL RECEPTION)

Setting the time and date by receiving a radio

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

Mechanism of radio signal reception .........  16
Automatic reception and manual reception ......  17

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

Radio signal reception range indication ..... 18
Radio signal reception range: Japan (JJY) ....... 19
Radio signal reception range: China (BPC) ......  20

Radio signal reception range: U.S.A. (WWVB) ..... 21
Radio signal reception range: Germany

(DCF77), UK (MSF) ................................... 22
To improve radio signal reception .............. 23
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

4 TIME DIFFERENCE ADJUSTMENT FUNCTION

Time difference adjustment function (When

using overseas) ............................................  28

Time difference adjustment function characteristics ..  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

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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 (Two-

second interval movement and Five-second

interval movement) ....................................  36
Power save function ..................................  37

6 TO PRESERVE THE QUALITY OF YOUR WATCH

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

How to conduct manual reception (Receive

a radio signal manually) ............................... 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

Automatic hand position adjustment function

(Adjustment of preliminary positions of hour,

minute and seconds hands) ......................... 64
Preliminary position adjustment of the date ......  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

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Содержание 7B72

Страница 1: ...apan China U S A Germany UK https www seikowatches com 日本語 English 1 JA 1 EN 䬁Ổᶮ㔈 橕ᶮ㔈 そのほかの言語の取扱説明書は パソコンや スマートフォンから当社ホームページ内の カスタマーサービス 取扱説明書ダウンロード にアクセスいただき ご覧ください Please refer to the Instruction Manuals of other languages by accessing Customer Service Instruction on our Website from PC or Smartphone ...

Страница 2: ... improve radio signal reception 23 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 4 TIME DIFFERENCE ADJUSTMENT FUNCTION Time difference adjustment function When using overseas 28 Time difference adjustment function characteristics 28 Setting the time difference Setting the radio signal transmitting sta...

Страница 3: ...uch 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...

Страница 4: ... battery should be charged Power Save Function P 37 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 Automatic Hand Position Alignment Function P 64 When the hand positions display an incorrect time as a result of external influences such as magnetism the watch automatically corrects...

Страница 5: ...ows an energy depletion state the battery requires charging Thesecondshandmoves at one second intervals Thesecondshandmoves at two second intervals Thesecondshandmoves at five second intervals The seconds hand is stopped The watch is sufficiently charged The charged energy is depleted P 36 The power save function is activated P 37 Check the movements of the seconds hand after releasing the Power S...

Страница 6: ... 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 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...

Страница 7: ...e are four time zones within the reception range Mainflingen transmitting station 77 5 kHz Anthorn transmitting station 60 0 kHz 1 000 km Approx 500 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 Labora...

Страница 8: ... within 5 seconds If a reception was successful The seconds hand points to Y Yes the 10 second position If a reception has failed The seconds hand points to N No the 20 second position If the button is pressed after 5 seconds have elapsed or while the seconds hand is moving to display the reception results the reception results display function is cancelled and the watch returns to the TIME displa...

Страница 9: ... while the hour and minute hands are moving EN 29 4 TIME DIFFERENCE ADJUSTMENT FUNCTION The radio signal transmitting station can be changed by setting the time difference When setting a time difference for regions other than the radio signal reception ranges the radio signal reception function will not work When setting the Daylight Saving Time DST add one hour to the time difference of the targe...

Страница 10: ...minutes or 30 minutes A The time can be adjusted on a 1 hour basis by use of the time difference adjustment function When adjusting to a local time with a time difference of 15 minutes or 30 minutes refer to How to manually set the time P 59 EN 33 4 TIME DIFFERENCE ADJUSTMENT FUNCTION Charging the battery How to charge the battery Expose the dial to light to charge the watch To ensure optimal perf...

Страница 11: ...seconds or longer or the button is pressed it displays the current time again after the seconds hand is rapidly advanced After sufficiently charging the battery set the watch for the current time if necessary Power Save 2 While the watch is being charged the seconds hand moves at Five second Intervals During the Five second Interval Movement neither the button nor the crown can be operated If the ...

Страница 12: ...erformance lowers b WARNING Notes on replacing the secondary battery Do not remove the secondary battery from the watch 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 ignitio...

Страница 13: ...in water and then brush it off with a soft toothbrush Protect the watch body from water splashes by wrapping it up in plastic wrap etc Clean it off with a soft cloth Because some titan bands use pins made of stainless steel which has outstanding strength rust may form in the stainless steel parts If rust advances pins may poke out or drop out and the watch case may fall off the band or the clasp m...

Страница 14: ...the movable loop and fixed loop and then securely tighten the clasp EN 49 6 TO PRESERVE THE QUALITY OF YOUR WATCH B B Type 1 While pressing the push buttons on the both sides of the flap lift to open the clasp Push button 2 Remove the pin from the adjustment hole Slide the band left and right and insert the pin into the adjustment hole at an appropriate length Push the buckle and fasten the clasp ...

Страница 15: ...l parts Please keep in mind that if original parts are not available they may be replaced with substitutes whose outward appearance may differ from the originals EN 54 6 TO PRESERVE THE QUALITY OF YOUR WATCH Inspection and adjustment by disassembly and cleaning Overhaul Periodic inspection and adjustment by disassembly and cleaning overhaul is recommended approximately once every 3 to 4 years in o...

Страница 16: ...ther the button nor the crown can be operated It takes time to receive a radio signal max 12 minutes The required time varies depending on the receiving state of a radio signal EN 57 7 TROUBLESHOOTING When a radio signal cannot be received When a radio signal cannot be received refer to the following pages Not receivable within the radio signal reception range Check that the time difference of the...

Страница 17: ...environment in which a radio signal can be received again receive a radio signal to set the time Automatic reception and manual reception P 17 When the watch receives radio signals after the date is manually adjusted it displays the date received from radio signals Ifthedateremainsincorrectevenafterasuccessfulradiosignalreception thepreliminarypositionofthedatemaybemisaligned Set the preliminary p...

Страница 18: ... the hour and minute hands The preliminary position of the date is the 1st The preliminary positions of the hour and minute hands are 0 00 AM When the preliminary positions are incorrect the correct time and date cannot be displayed even if the watch receives radio signals In such a case by correcting the preliminary positions the loss or gain of the time or date can be corrected When the numerica...

Страница 19: ...has been activated P 37 When the watch is not exposed to adequate light for a certain period of time the power save function to limit energy consumption is automatically activated 1 Fully charge the watch so that the seconds hand may move at one second intervals 2 After that if the watch displays the incorrect time receive a radio wave as needed P 17 P 34 The watch hands advance rapidly unless a b...

Страница 20: ...time refer to In case of an abnormal movement to perform procedures 3 If the watch cannot resume normal movement even after conducting the above mentioned procedures consult the retailer from whom the watch was purchased P 64 P 76 Thesecondshandposition is not correctly aligned in the reception results display or the reception level display The seconds hand is out of the preliminary position as a ...

Страница 21: ...te hands will start to move and stop pointing to 12 o clock 0 minutes Thebuttoncannotbeoperateduntilallthehandsstop EN 77 7 TROUBLESHOOTING Specifications Cal 7B62 7B72 1 Features Basic watch with three hands Hour minute and seconds hands date display 2 Frequency of crystal oscillator 32 768 Hz Hz Hertz cycles per second 3 Loss gain Monthly rate Loss gain 15 seconds in a monthly rate Except the ca...

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