Jaeger-leCoultre Polaris Geographic WT - Starting and Winding

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STARTING AND WINDING
Crown A in position 0.
A few clockwise turns of the crown are enough
to start your watch.
It will then automatically wind up when you
wear it. Please note that the crown does not
lock when winding, even when the watch is
fully wound.
The power-reserve hand allows you to control
the winding level of your watch at all times.