Screw Lock Type Crown - Seiko Cal. 4T57 Instructions Manual

CAL. 4T57
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STOPWATCH
● Three small STOPWATCH hands
● Measures up to 60 minutes in 1/10
second increments.
● Split time measurement
TIME/CALENDAR
● Hour, minute and second hands and
date

SCREW LOCK TYPE CROWN

u Some models may have a screw-lock mechanism that can securely lock
the crown by screw when they are not being operated.
u Locking the crown will help to prevent any operational errors and enhance
the water resistant quality of the watch.
u 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.
● How to use the screw lock type crown
Keep the crown securely locked unless you need to operate it.
[How to unlock the screw lock type crown]
Turn the crown counterclockwise.
The crown is unlocked and can be operated.
[How to lock the screw lock type crown]
Once you have finished operating the crown, turn it
clockwise while gently pressing it in toward the watch
body until it stops.
* 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.
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