Guinand 90e Series, Manual

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tion precisely when the hand of the small second has reached
“60”. This ensures a synchronous movement of minute and
second hands.
Important: after setting the time, press the crown back into
the watch case. This is the only way to ensure water resistance
of the watch. For watches with a screwed crown, please fasten
the crown after setting. This is the only way to ensure water
resistance.