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Never use the watch in saturation diving
using helium gas.
While diving, never operate the watch in any other
manner than set forth in the instruction manual.
WARNING
WARNING
CAUTION
Before using the diver’s watch, you have to be properly trained in
various types of diving and possess the requisite experience and skill
to dive safely. When diving, strictly abide by the rules of diving.
CAUTION
Do not turn or pull out the crown when the watch is wet.
※ Should blur or moisture occur inside the dial glass and persist for a long time, this
indicates poor waterproof capability. Consult the retailer from whom the watch
was purchased or SEIKO CUSTOMER SERVICE CENTER as soon as possible.
Water may get inside of the watch.
Do not leave moisture, sweat and dirt on the watch for a long time.
Do not wear the watch while taking a bath or a sauna.
CAUTION
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.
Steam, soap or some components of a hot spring may accelerate the
deterioration of water resistant performance of the watch.
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■ PRECAUTIONS FOR DIVING （PLEASE MAKE SURE TO OBSERVE THE FOLLOWING.）
● Before diving
Before diving, check the following:
１．The time is correctly set.
２． The power reserve indicator shows the level of remaining
power not less than one-half. If the remaining power
shows less than one-half, manually wind the mainspring.
３． The rotating bezel turns smoothly. （The bezel
rotation must not be too loose or too tight.）
⇒ ● “How to read the power reserve indicator” page 69
⇒ ■ “HOW TO WIND THE MAINSPRING” page 66
⇒ ■ “ROTATING BEZEL” page 62
⇒ ■ “NAMES OF THE PARTS AND THEIR FUNCTIONS” page 60.
４．The crown is completely screwed in.
５． There are no visible cracks or scratches on the
dial glass or band.
６． The band is firmly attached to the watch （with
spring bars, clamp or other parts.）
⇒ ● “Screw lock type crown” page 61
1
2
3
4
5
6
CAUTION
If there are any malfunctions, contact the retailer from whom the watch was purchased or SEIKO CUSTIMER SERVICE CENTER.
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● While diving
● After diving
Please observe the following cautions for use.
Please follow the care instructions below after diving.
Rinse the watch in fresh water to wash out
all seawater to prevent rust from forming.
After rinsing the watch, wipe it
thoroughly dry.
Wear the watch in air （scuba） diving
within the water depth of 200 meters.
Do not operate the crown when the
watch is in water.
Take care not to bump the watch against
hard objects such as rocks.
Bezel rotation may become slightly harder
in the water but this is not a malfunction.
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L
０
１
２
：Crown at the locked position
： Crown unlocked at the 0 position for
manual winding of the mainspring
：First click position for date setting
：Second click position for time setting
※ It is necessary to unlock the screw lock type crown before operating it.
※ In order to prevent any operational errors from occurring, once you have finished operating the crown, make sure to relock it.
The watch features a screw-lock mechanism that can securely lock the crown when it is not being operated in order to prevent any operational errors and to improve the water resistant property.
L
０
１
２
Confirmation line
CAUTION
When locking the crown, turn it slowly with care, ensuring that the screw is properly engaged.
Be careful not to forcibly push it in, as doing so may damage the screw hole in the case.
To unlock the crown
Turn the crown counterclockwise
（downward） to unscrew it. When you
see the red line, the crown can be operated.
To lock the crown
Turn the crown clockwise
（upward） while gently pressing
it in toward the watch body until it stops.
■ NAMES OF THE PARTS AND THEIR FUNCTION
※ The orientation and design of the display may vary depending on the model.
● Screw lock type crown
● Basic mechanism
Minute hand
Hour hand
Second hand
Power reserve indicator
Calendar
Crown
Rotating bezel
page 62
page 68
