The crown has 2 positions:
Watch functions:
1. Normal position (wearing position): when the crown is
positioned against the case, the crown ensures that the watch is
water-resistant.
Winding: turn the crown forwards until it stops.
2. Time setting: hours – minutes – seconds. Pull the crown out to
position 2. Turn the crown forwards or backwards. Synchronise the
seconds by pushing the crown back to position 1 to coincide with
a given time signal.
Note: calibres 1861, 1863, 1866 and 3604 do not have a stopsecond
mechanism. To synchronise, the crown should be gently
turned backwards and pressure maintained to stop the seconds
hand. R elease when the display corresponds to the timing signal
and push crown back to position 1.