54
55
● Function of the crown
2: time setting
1: date setting
0: unlocked position: winding the mainspring （by hand）
L: locked position
Screw lock type crown
Before operating the screw lock type crown, it is neces-
sary to unlock it.
In order to prevent any operational errors, once you have
finished operating the crown, make sure to relock it.
L
０
２
１
● How to use the screw lock type crown
How to unlock the screw lock type crown
How to lock the screw lock type crown
Turn the crown in the direction
shown by the arrow to unscrew it.
Now the crown can be operated.
Turn the crown in the direction shown
by the arrow while gently pressing it in
toward the watch body until it stops.
※ The crown can be pulled out
only while it is unlocked.
To loosen
Screw lock type
crown is locked.
Screw lock type crown is unlocked.
It is necessary to unlock the screw lock type crown before operating it.
Once you have finished operating the crown, make sure to relock it.
Turn the crown while
pressing it in.
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 do-
ing so may damage the screw hole in the case.
CAUTION
■ SCREW LOCK TYPE CROWN
The watch features a screw-lock mechanism that can securely lock the crown and
buttons to prevent any operational errors when they are not being operated.
56
57
■ 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 the wearer's arm winds the mainspring of the watch.
When first using a stopped watch, it is recommended that you manually wind the mainspring
by turning the crown.
※ 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.
※ Under a low-temperature condition （below 0℃）, always keep at least one-sixth of the watch power shown
by the power reserve indicator.
● 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.
Observe the power reserve indicator to check the level of the remaining power.
Refer to "POWER RESERVE INDICATOR" on page 58.
● How to manually wind the mainspring by turning the crown
In order to set the time and calendar after winding the mainspring
manually, do not relock the crown but continue the procedures.
※ Refer to "HOW TO SET THE DATE AND TIME" on page 60, and "Manual date adjustment at the end of the month" on page 64.
1. Unlock the crown.
2. Slowly turn the crown in the direction shown by
the arrow 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 small second hand starts moving.
3. Once you finish winding the mainspring, make
sure you relock the crown.
※ Refer to "How to use the screw lock type crown" on page 55.
※ Refer to "How to read the power reserve indicator" on page 59.
58
59
■ 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 main-
spring （remaining amount of power）.
Models
without a
rotatable
watchcase
Models with
a rotatable
watchcase
Winding state of
the mainspring
Fully wound
Half wound
Unwound
Operable
hours
Approximately 72
hours （3 days）
Approximately 36
hours （1.5 days）
The watch either stops
or is running down.
※ 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.
● How to read the power reserve indicator
60
61
■ HOW TO SET THE DATE AND TIME
１． Make sure that the mainspring is suffi-
ciently wound and the watch is working.
※ When setting the date and time, ensure that the
watch is working.
３． Pull out the crown to the first click.
（The small second hand continues moving.）
Pull out the crown
to the first click.
２．Unlock the crown.
Refer to "How to use the screw lock type crown" on page 55.
※ The location of the crown may vary depending on
the model.
Refer to "NAMES OF THE PARTS" on page 50.
４． Turn the crown in the direction shown by the
arrow to set the date to the previous date.
（Example）In case you wish to set the date
to "6", set the date to "5" at this stage.
※ Do not set the date when the hands of the watch are indicating
any time between 9:00PM and 1:00AM. To set the date during
this time period, pull out the crown to the second click and
turn it to temporarily advance the time to after 1:00AM, and
then push the crown back to the first click to set the date.
５． Pull out the crown to the second click
when the small second hand is point-
ing at the 0 second position. The small
second hand will stop on the spot.
Pull out the crown
to the second click.
The small second hand stops
pointing at the 0 position.
