The Patek Philippe Annual Calendar Chronograph Complications 42 mm Platinum (ref. 5905P-010) is a men's dress watch with a 42 mm round case in platinum. The dial is protected by sapphire crystal.
It is powered by the self-winding mechanical calibre CH 28-520 QA 24H with a power reserve of up to 55 hours. Functions: Date, month, day of the week, day/night indicator, chronograph. Water-resistant to 30 m. The watch is fitted with a leather strap.
This example is in perfect condition, and comes with the original box and papers.