IWC Schaffhausen AQUATIMER DEEP THREE Mode D'emploi page 26

This watch has a screw­in 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 into position X and turning it to the right at the same time, it
is screwed down firmly again and secured.
Important: Although the watch is water­resistant in positions 0, 1 and 2, the crown
should always be screwed in again for normal use (position X). The crown must not be
moved or used for any purpose whatsoever while under water.
— 2 6 —
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 —
Date setting
1 —
Time setting
2 —
n O r m A l p O s i t i O n
A q u A t i m e r D e e p t h r e e
X 0 1 2