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English

English

PRECAUTIONS ON USING THE WATCH FOR DIVING

Before diving, make sure that the watch operates normally and be sure to observe the
precautions described below.

BEFORE DIVING

Do not use the watch for saturation diving using helium gas.
To measure the elasped time while you are underwater, always use the rotating bezel.
Check that:

• the second hand is moving at one-second intervals.
• the “•” mark on the case back indicates the expected life limit of the battery.  (See “BATTERY

CHANGE” on page 22.)

• the crown is locked tightly in place.
• the buttons are locked tightly in place.
• there are no visible cracks in the crystal or the watch band.
• the strap or bracelet is securely fastened to the watch case.
• the buckle keeps the strap or bracelet firmly secured to the wrist.
• the rotating bezel turns counterclockwise smoothly (the rotation must not be too loose or too tight)
   and the “   ” mark aligns with the minute hand.
• the time and calendar are appropriately set.

If there are any malfunctions, we recommend that you contact an AUTHORIZED SEIKO SERVICE
CENTER.

WHILE DIVING

Do not operate the crown and the buttons when the watch is wet or in water.
Take care not to hit the watch against hard objects such as rocks.

Bezel rotation may become slightly stiffer underwater.  This is not a malfunction.

AFTER DIVING

Rinse the watch in fresh water after diving and wash out all seawater, soil, sand, etc.
Wipe the watch thoroughly dry to prevent possible rust on the case after cleaning the watch in fresh water.

WARNING

CAUTION

WARNING notes indicate any condition or practice which, if not strictly observed,
could result in severe personal injury or possible death.

CAUTION notes indicate any condition or practice which, if not strictly observed,
may result in personal injury or property damage.

Summary of Contents for 7T92

Page 1: ...ing helium gas Before diving make sure that the watch operates normally WARNING Please read and observe the instructions described in this booklet to ensure the proper functioning of your diver s watch Do not operate the crown when the watch is wet or in water Do not operate the buttons when the watch is wet or in water Avoid hitting the watch against hard objects such as rocks CAUTION ENGLISH ...

Page 2: ...l turns counterclockwise smoothly the rotation must not be too loose or too tight and the mark aligns with the minute hand the time and calendar are appropriately set If there are any malfunctions we recommend that you contact an AUTHORIZED SEIKO SERVICE CENTER WHILE DIVING Do not operate the crown and the buttons when the watch is wet or in water Take care not to hit the watch against hard object...

Page 3: ...STOPWATCH hour hand STOPWATCH second hand STOPWATCH minute hand CONTENTS Page SETTING THE TIME AND ADJUSTING THE STOPWATCH HAND POSITION 8 SETTING THE DATE 11 STOPWATCH 12 TACHYMETER 15 TELEMETER 17 ROTATING BEZEL 19 SCREW DOWN CROWN 20 SECURITY LOCK BUTTON OPERATION 21 BATTERY CHANGE 22 TO PRESERVE THE QUALITY OF YOUR WATCH 24 SPECIFICATIONS 27 For the care of your watch see TO PRESERVE THE QUALI...

Page 4: ...back to the exact minute 2 STOPWATCH HAND POSITION ADJUSTMENT If the stopwatch hands are not in the 0 position follow the procedure below to set them to the 0 position B STOPWATCH second hand STOPWATCH hour hand 6 STOPWATCH 1 20 second hand A STOPWATCH minute hand SETTING THE TIME AND ADJUSTING THE STOPWATCH HAND POSITION 6 Minute hand Hour hand CROWN Pull out to second click when the second hand ...

Page 5: ...following order by pressing button for 2 seconds A STOPWATCH 1 20 second hand STOPWATCH hour and minute hands The selected hand s turn s a full circule Press repeatedly to set the selected stopwatch hand s to the 0 position The hand s move s quickly if button B is kept pressed After all the adjustments are completed check that the hour and minute hands for time display indicate the current time B ...

Page 6: ...et at the normal position and that the stopwatch hands are reset to the 0 position If the stopwatch hands do not return to the 0 position when the stopwatch is reset to 0 follow the procedure in SETTING THE TIME AND ADJUSTING THE STOPWATCH HAND POSITION STOPWATCH The stopwatch can measure up to 12 hours in 1 20 second increments When the measurement reaches 12 hours the stopwatch automatically sto...

Page 7: ...eter scale 90 90 tachymeter scale figure x 1 km or mile 90 km h or mph Ex 2 If the measuring distance is extended to 2 km or miles or shortened to 0 5 km or miles and the stopwatch second hand indicates 90 on tachymeter scale 90 tachymeter scale figure x 2 km or mile 180 km h or mph 90 tachymeter scale figure x 0 5 km or mile 45 km h or mph Split time measurement A START SPLIT A STOP RESET B B B M...

Page 8: ... is so graduated that the sound travels at a speed of 1 km in 3 seconds Under the condition of temperature of 20 C 68 F CAUTION The telemeter provides only a rough indication of the distance to the place where lightning struck and therefore the indication cannot be used as the guideline to avoid the danger of lightning It should also be noted that the speed of the sound differs depending on the te...

Page 9: ...1 ROTATING BEZEL The rotating bezel can show the elapsed time up to 60 minutes By setting it before diving you can know how many minutes you are underwater Start 10 10 AM mark 30 minutes have elapsed 30 on rotating bezel 1 Turn the rotating bezel to align its mark with the minute hand The rotating bezel rotates with clicks With each click it turns half a minute 2 To know the elapsed time read the ...

Page 10: ...ck the crown first before pulling it out and it is important to securely screw the crown in after each use HOW TO OPERATE THE SCREW DOWN CROWN The crown must be securely locked in the case except when you use it to set the watch How to unlock the crown Turn the crown counterclockwise to unscrew it The crown is released and projected outward from its original position How to lock the crown Turn the...

Page 11: ...battery nears its end the small second hand moves at two second intervals instead of normal one second intervals In that case have the battery replaced with a new one as soon as possible The watch remains accurate while the small second hand is moving at two second intervals Be sure to replace the battery as soon as it runs down and not to leave a discharged battery inside the watch To show when t...

Page 12: ...checked once every 2 to 3 years by an AUTHORIZED SEIKO DEALER or SERVICE CENTER to ensure that the case crown gasket and crystal seal remain intact TEMPERATURES 60 C 10 C Your watch works with stable accuracy within a temperature range of 5 C and 35 C 41 F and 95 F Temperatures over 60 C 140 F may cause battery leakage or shorten the battery life Do not leave your watch in very low temperatures be...

Page 13: ...than 500 lux for approximately 10 minutes LumiBrite can emit light for 5 to 8 hours Please note however that as LumiBrite emits the light it stores the luminance level of the light decreases gradually over time The duration of the emitted light may also differ slightly depending on such factors as the brightness of the place where the watch is exposed to light and the distance from the light sourc...

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