iwc portuguese chronograph classic reference 3904, Руководство по эксплуатации

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P O R T U G U E S E C H R O N O G R A P H C L A S S I C
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 U E S E C H R O N O G R A P H C L A S S I C
Your IWC watch shows you the time in hours, minutes and seconds, together with the
date. You can use the integrated flyback chronograph to measure any period of time in
seconds, minutes and hours. Stop times can be added together. The mechanical mo-
vement with automatic winding has a power reserve of approximately 68 hours when
fully wound. The engraved rotor winds the watch in both directions of rotation via the
IWC double-pawl winding system. Your Portuguese Chronograph Classic is protected
by a convex 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.