iwc GST Aquatimer Mode D'emploi page 12

Functions of the crown
X 0 1 2
Normal position
This watch has a screw-in crown. The screw-in connec-
tion (normal position, position X) prevents unintentional
adjustment of the time or the date, and the watch case
has double protection against penetrating water.
To release the secure crown, unscrew it by rotating it to
the left, where it automatically assumes position 0, the
winding position. By depressing the crown in position X
and rotating it to the right at the same time, it is screwed
down firmly again and secured.
X Normal position
(screwed in)
0 Winding position
1 Date setting
2 Time setting
Winding position
In the winding position (position 0), you can also wind
the automatic movement by hand. The movement will
start after only a few revolutions of the crown. However,
it is better to wind the movement fully with about
30 revolutions of the crown, as maximum accuracy and
a power reserve of about 42 hours will then be assured,
even after taking off the watch.
Setting the date
If a month has fewer than 31 days, you must set the date
by hand to the first day of the following month. Pull
the crown to position 1. You can now set the date by
rotating the crown to the left (quick setting).
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