IWC Schaffhausen 3891 Instrucciones De Operación página 18

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THE TECHNICAL REFINEMENTS OF THE
PILOT'S WATCH CHRONOGR APH
Your IWC watch shows you the time in hours, minutes and seconds, together with the date and the
day of the week. You can use the integrated chronograph to measure any period of time up to 12 hours
in seconds, minutes and hours. Recorded times can be added to gether. The mechanical movement
with automatic winding has a power reserve of approximately 46 hours when fully wound. Your Pilot's
Watch Chronograph is water-resistant to 6 bar and protected by a sapphire glass of hardness grade 9
on Mohs' scale. The glass is retained securely in the case at low pressure, for example when a drop in
air pressure occurs at extreme altitudes. To ensure that this extra ordinary watch continues to perform
faultlessly in the future, it is essential to observe a few important operating instructions.
PILOT'S WATCH CHRONOGR APH