Cal. 4T57A
7/11
TECHNICAL GUIDE
1 HOuR, mINuTE ANd SEcONd HANdS
1. Place the movement directly on a movement holder or
the like and press in the hands.
2. Install the hour, minute and second hands at the
“12”o’clock position.
3. Install the chrono minute and second hands at the
“0”o’clock position.
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How to install
31 SETTINg STEm
[ Reference ] The power of press hands
Minute & Hour Hands
< 5kg
Second Hand
< 5kg
Chrono Minute & Second Hands < 3kg
23 BATTERy
While pushing the indented portion of the
arrow, pull out the setting stem.
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How to remove
Push
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How to remove or install the battery
1) Remove the hook of the switch spring's battery clamp.
2) Insert the battery sideways, and have the hook of the switch spring's battery clamp catch the
main plate.
Battery clamp
Main plate
1) When Removing
2) When Installing
16 Switch spring
