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By setting the rotating bezel beforehand, the elapsed time since the start of an event such as diving can be measured.
This watch has an one-way rotating bezel. As the evaluation of the remaining air in
your cylinder is based on the information of the elapsed time of the dive, the rotating
bezels for a diver’s watch is designed to rotate only counterclockwise, so that the
watch is prevented from displaying the elapsed time shorter than it actually is.
● How to use the rotating bezel
CAUTION
Make sure that you check the correct remaining amount of air in your cylinder before diving.
Use the display of the elapsed time by the rotating bezel only as a guide during diving.
CAUTION
The rotating bezel is designed to rotate only
counterclockwise. Do not forcibly rotate it clockwise.
２．Read the graduation on the rotating bezel to which the minute hand is pointing.
１． At the start of the event, for which you want to measure the elapsed time （for example, when you
start diving）, rotate the bezel so that the
mark on the bezel is aligned with the minute hand.
Example:When you start diving at 10:10.
Align the
mark with
the minute hand
Read the graduation on the rotating bezel
to which the minute hand is pointing.
■ ROTATING BEZEL
Rotating direction of the bezel
Elapsed time
Start of the dive
After 15 minutes has elapsed
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６． Close the clasp first （6-1 in the
illustration） and then, the flap
（6-2 in the illustration.）
４．Press the lock button.
７． With the hand which is not wearing
the watch, adjust the length of the
slider so that the watch fits well
around your wrist.
Clasp
Lock button
7
Limit mark
（upper surface）
Slider
5
7
Buckle
4
6-1
6-2
５．Lift up the clasp to release the buckle, and strap the watch on your wrist.
■ HOW TO USE THE DIVER ADJUSTER
The metal bracelet of this watch is equipped with a diver adjuster mechanism.
It is very useful when you wear the watch over a wet suit, as it allows you to
easily adjust the bracelet length.
２． Press the flap down further approximately
20°, and hold it there.
※ You may feel slight resistance, but doing this
requires only a light force.
Please do not push the flap down forcibly.
３． Lightly pull the bracelet on the 6 o’clock side of
the watch along the curved line of the bracelet.
※ Again as the step 2 above, doing this requires only a
light force. Please do not pull the bracelet forcibly.
※ The slider can be pulled out approximately 30 mm. Be
careful not to pull it out beyond the limit mark inscribed
on it. （Refer to the illustration on the next page.）
Bracelet on the 6 o’clock
side of your watch
Bracelet on the 12 o’clock
side of your watch
Flap
1
2
3
１．Lift up the flap approximately 90° until it stands upright.
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■ HOW TO WIND THE MAINSPRING
This watch is a self-winding watch equipped with a manual winding mechanism. When the watch
is worn on the wrist, the motion of your arm automatically winds the mainspring of the watch.
● How to manually wind the mainspring by turning the crown
In order to set the time and date after winding the mainspring
manually, do not relock the crown but continue the procedures.
⇒ ● “How to set the date and time” page 70
● Guide for winding state of the mainspring
Self-winding： The mainspring of the watch is designed to be fully wound when it is
worn for twelve hours per day for three to five consecutive days.
Manual winding： Five full rotations of the crown will provide the power
to run the watch for approximately ten hours.
⇒ ● “Screw lock type crown” page 61
１．Unlock the crown.
３． Once you finish winding the mainspring,
make sure you relock the crown.
２． Slowly turn the crown clockwise （upward） to wind the mainspring
with extra care not to press it in. Wind the mainspring until the power
reserve indicator shows a full-wound state. Immediately, the second
hand starts moving.
⇒ ● “How to read the power reserve
indicator” page 69
Slowly turn
the crown.
※ Observe the power reserve indicator to check the amount of the remaining power.
⇒ ■ “POWER RESERVE INDICATOR” page 68
※ When first using the stopped watch, it is recommended that you manually wind the
mainspring by turning the crown.
CAUTION
※ The watch employs a device to prevent overwinding of the mainspring. Once the mainspring is fully wound,
the mainspring slips inside, disengaging the winding mechanism. When this happens, you can still turn the
crown without damaging the watch, however, please refrain from excessive operation of the mainspring.
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Power
Reserve
Indicator
Winding state of
the mainspring
Fully wound
Half wound
Unwound
Number
of hours
the watch
can run
Approximately 72
hours （3 days）
Approximately 36
hours （1.5 days）
The watch either
stops or is running
down.
● How to read the power reserve indicator
※ Under a low-temperature condition （below 0ºC）, always keep at least one-sixth of the power reserve shown by the power reserve indicator.
■ POWER RESERVE INDICATOR
Before removing the watch from your wrist,
observe the power reserve indicator to check
if the watch has stored enough power to keep
running until the next time you wear it. If
necessary, wind the mainspring. （To prevent
the watch from stopping, wind the mainspring to
store the excess power that will allow the watch
to run for extra time.）
※ The continuous operable time of the watch may vary depending on actual use conditions, such
as the number of hours you wear the watch or the extent of your movement while wearing it.
※ In a case where you wear the watch for a short period of time each day, observe the power reserve
indicator to check the level of the remaining power. If necessary, manually wind the mainspring.
Power reserve indicator
The power reserve indicator lets you know the winding state of the mainspring
（the amount of the remaining power）.
