iwc Montre d'Aviateur Chrono-Automatic TOP GUN Mode D'emploi page 17

Technical refinements of the Pilot's Watch
Chrono-Automatic Edition TOP GUN
Your IWC watch shows you the time in hours, minutes and
seconds as well as the day and date. With the integrated
chronograph, you can measure any length of time up to
12 hours in seconds, minutes and hours. The mechanical
movement with automatic winding has 25 jewel bearings
(synthetic rubies) and has a power reserve of at least
44 hours when fully wound. The watch case is water-
resistant 6 bar and is protected by a sapphire glass of
hardness grade 9, which is secured against displacement
from a drop in air pressure at extreme altitudes. Your
IWC watch has a double case; the soft iron inner case
assures optimal protection against magnetic fields.
To ensure that this extraordinary watch continues to
perform its tasks in future, it is essential to follow a
few important operating instructions.