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■NAMES OF THE PARTS AND THEIR FUNCTION
●Basic mechanism
Center chronograph
second hand
Small second hand
54
Hour hand
Power reserve
indicator
※ The orientation and design of the display may vary depending on the model.
※ Some models may have screw lock type crown and button(s).
Refer to "SCREW LOCK TYPE CROWN AND BUTTON" on page 56.
■SCREW LOCK TYPE CROWN AND BUTTON
The watch features a screw-lock mechanism that can securely lock the crown and but-
tons to prevent any operational errors when they are not being operated.
●Screw lock type crown
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.
Screw lock type crown is locked.
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※ Once the crown is unlocked, you can pull it out.
Chronograph
minute hand
START/STOP
button
Minute hand
Crown
Calendar
Chronograph
hour hand
RESET
button
24-hour hand
Screw lock type crown is unlocked.
●The mechanism of the crown
Screw lock type crown
L: Screw lock type crown is at the locked position.
0: Screw lock type crown is at the unlocked position: the
mainspring can be manually wound.
1: Screw lock type crown is positioned for calendar set-
ting. (time difference adjustment.)
2: Screw lock type crown is positioned for time setting.
Before operating the screw lock type crown, it is necessary to unlock it.
In order to prevent any operational errors, once you have finished operating the crown, make
sure to relock it.
Refer to "SCREW LOCK TYPE CROWN" on the following page 56.
●How to use the screw lock type crown
How to unlock the screw lock type crown
To loosen
Turn the crown counterclockwise
Turn the crown clockwise (upward)
(downward) to unscrew it.
while gently pressing it in toward
Now the crown can be operated.
the watch body until it stops.
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.
L
０
１
２
55
How to lock the screw lock type crown
57
Turn the crown while pressing it in.
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