Patek Philippe Complications 5235/50R-001 Annual Calendar Regulator

The Patek Philippe 5235/50R-001 Annual Calendar Regulator draws inspiration from traditional regulator clocks, featuring a vertically satin-brushed two-tone graphite and ebony-black dial. Housed in a 40.5 mm rose gold case with satin-finished flanks and a polished bezel, the watch showcases a regulator-style display with separate hour and seconds subdials and a central sweep minutes hand. Three apertures along the top of the dial indicate the day, date, and month, driven by the annual calendar mechanism which requires adjustment only once a year. White gold baton hands with white varnish and finely printed hour markers complement the dial’s contemporary yet timeless aesthetic.

At its core is the self-winding calibre 31-260 REG QA, developed specifically for this model. It incorporates Patek Philippe’s advanced technologies, including the Pulsomax escapement and Spiromax balance spring in Silinvar, providing excellent timekeeping performance and magnetic resistance. The movement consists of 313 components, operates at 3.2 Hz, and offers a power reserve of 38 to 48 hours, powered by a 22K gold off-centre mini rotor. Combining regulator-style functionality with the practicality of an annual calendar, the 5235/50R-001 represents a fusion of technical innovation and refined watchmaking. It is fitted with a matte black hand-stitched alligator strap and fastened with a rose gold prong buckle.