iwc AQUATIMER CHRONOGRAPH Operating Instructions Manual page 6

The technical refinements of the
Aquatimer Chronograph
Your IWC watch shows you the time in hours, minutes
and seconds, together with the date and the day. You can
use the integrated chronograph to measure any period of
time up to 12 hours in seconds, minutes and hours. Stop
times can be added together. The dive time is read off on
the external rotating bezel, which for safety reasons can
only be turned anticlockwise. The mechanical movement
with automatic winding has 25 jewels (synthetic rubies)
and a power reserve of approximately 44 hours when
fully wound. Your Aquatimer Chronograph is shockproof
and protected by a sapphire glass of hardness grade 9 on
Mohs' scale. Your watch is water-resistant 12 bar. To en-
sure that this extraordinary watch continues to perform
faultlessly in the future, it is essential to observe a few
important operating instructions.