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ABOUT THIS PRODUCT
Do not use the watch in scuba diving or saturation diving.
※ 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 CUSTMER SERVICE CENTER (listed on the end of a book).
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 special watches for diving.
Do not turn or pull out the crown when the watch is wet.
Water may get inside of the watch.
WARNING
CAUTION
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CHARACTERISTICS
・ This watch features Spring drive, the unique mechanism made available only
by SEIKO technology.
CAUTION
・ Spring Drive works by the power provided by the mainspring. Remember to check the
power reserve indicator and keep the mainspring of the watch suffi ciently wound while
using the watch. → POWER RESERVE INDICATOR on page 76.
・ Under a low-temperature condition (below 0ºC), the watch may stop when the power reserve
indicator shows less than one-fourth (7R series) or one-sixth (5R series) of the power reserve.
In such a case, turn the crown to wind the mainspring.
・ The Spring Drive watch ensures quartz accuracy while using the mainspring
as its sole power source.
・The glide-motion second hand moves in a perfectly smooth movement.
ABOUT THIS PRODUCT
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ABOUT THIS PRODUCT
Do not wear the watch while taking a bath or a sauna.
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 leave moisture, sweat and dirt on the watch for a
long time.
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.
Steam, soap or some components of a hot spring may accelerate the
deterioration of water resistant performance of the watch.
CAUTION
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ABOUT THIS PRODUCT
NAMES OF THE PARTS AND THEIR FUNCTION
Caliber number
7R87
7R88
7R89
7R99
5R77
Reference pages
(NAMES OF THE PARTS
AND THEIR FUNCTION)
P.66
P.67
P.68
P.69
P.70
Refer to the instructions pertaining to the caliber number of your watch on
the following pages. The caliber number can be checked on the case back
of your watch. → PERFORMANCE AND TYPE on page 93
※ The caliber number identifi es your watch type.