【
4R57A operation manual
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1. How to set the time
1) Pull out the crown to the second click position.
2) Turn the crown to set Hour and Minute hands.
(Check if AM/PM is set correctly.)
3) Push the crown back into the normal position.
*If the crown is turned counterclockwise, the Date hand reverses.
Please reset the Date hand.
2. How to set the Date hands
1) Pull out the crown to the first click position.
2) Turn the crown counterclockwise for date setting.
* Do not set the date between 9:00 P.M. and 1:30 A.M. If you do so,
the date may not change properly or it may cause a malfunction.
3) Push the crown back into the normal position.
3. How to wind up the mainspring
a) Manual winding … Slowly turn the crown clockwise at normal position.
* If you wind by turning the ratchet wheel screw 8 times, it will start to move naturally after shaking slightly.
b) Winding up with the winding machine.
Full wind up conditions are as follows:
・
Rotary speed : 30 rpm
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Operating time : 60 minutes
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Cal.4R57A
Operation Manual
