IWC Schaffhausen aquatimer perpetual calendar digital date-month Mode D'emploi page 24

This watch has a screw-in crown. Screwing the crown in to its normal position (X)
prevents the inadvertent adjustment of the time or date and also acts as a double
seal to prevent water from seeping into the case. To release the crown, unscrew it by
turning it to the left, where it automatically assumes position 0, the winding position.
By depressing the crown in position X and turning it to the right at the same time, it is
screwed down firmly again and secured.
With the crown in the winding position (0), you can also wind the automatic movement
by hand. A few revolutions of the crown are enough to start the movement. However, it
is better to wind the watch by turning the crown through approximately 20 revolutions
as this will ensure maximum accuracy.
A Q U A T I M E R P E R P E T U A l C A l E n d A R d I g I T A l d A T E - M o n T h
— 2 4 —
F U n C T I o n s o F T h E C R o W n
Normal position (screwed in)
X —
Winding position
0 —
Setting the calendar
1 —
Time setting
2 —
n o R M A l P o s I T I o n
W I n d I n g P o s I T I o n
X 0 1 2