Jaeger-leCoultre REVERSO CLASSIC MEDIUM THIN Instructions For Use Manual page 28

USE
0 1
WINDING
Crown in position 0.
The watch is wound by turning the crown
clockwise. It is fully wound when the crown
locks.
Do not attempt to wind a manually wound
watch beyond the locking point.
To ensure good operating accuracy, it is
advisable to wind your watch regularly, at
least once a day.
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