IWC Schaffhausen 3716 Mode D'emploi page 18

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T H E T E C H N I C A L R E F I N E M E N T S O F T H E
P O R T U G I E S E R C H R O N O G R A P H
Your IWC watch shows you the time in hours, minutes and sec­
onds. You can use the integrated chronograph to measure any
period of time in seconds and minutes. Stop times can be added
together. The mechanical movement with automatic winding has
a power reserve of approximately 46 hours when fully wound.
Your watch is protected by a convex sapphire glass of hardness
grade 9 on Mohs' scale and is water­resistant 3 bar. To ensure
that this extraordinary watch continues to perform faultlessly in
the future, it is essential to observe a few important operating
instructions.
P O R T U G I E S E R C H R O N O G R A P H