iwc PORTUGIESER YACHT CLUB CHRONOGRAPH Mode D'emploi page 16

The technical refinements of the
Portuguese Yacht Club Chronograph
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 movement with automatic winding has 38 jewels
(synthetic rubies) and 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 Yacht Club Chrono-
graph is protected by a convex sapphire glass of hardness grade 9 on Mohs'
scale. Your watch is water-resistant 6 bar. To ensure that this extraordinary
watch continues to perform faultlessly in the future, it is essential to observe
a few important operating instructions.