iwc INGENIEUR AUTOMATIC 3570 Mode D'emploi page 22

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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 I N G E N I E U R A U T O M AT I C
Your IWC watch shows you the time in hours, minutes and
seconds, together with the date. The watch is water-resistant
12 bar and protected by a sapphire glass of hardness grade 9 on
Mohs' scale. The mechanical movement with automatic winding
has a power reserve of approximately 42 hours when fully wound.
To ensure that this extraordinary watch continues to perform
faultlessly in the future, it is essential to observe a few important
operating instructions.
I N G E N I E U R A U T O M AT I C