IWC Schaffhausen Portugieser Chronograph Rattrapante 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 R A T T R A P A N T E
Your IWC watch shows you the time in hours, minutes and seconds.
You can use the integrated double chronograph to measure any
period of time in seconds and minutes, and save intermediate times
or a second final time with the split-seconds hand (Ratrappante
hand). Stop times can be added together. The mechanical hand-
wound movement has a power reserve of approx. 48 hours when
fully wound. Your watch is protected by an arched sapphire glass
of hardness grade 9 on Mohs' scale. Your watch is water-resistant
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 R A T T R A P A N T E