Complications | 5235/50R-001

A sleek, contemporary display

A tribute to the precision clocks used in watchmaking workshops in the past, this rose gold self-winding Annual Calendar Regulator stands out with its vertical satin-brushed two-tone graphite and ebony black dial. Its high-tech regulating movement incorporates a Pulsomax® escapement and a Spiromax® balance-spring in Silinvar®: two developments from the Patek Philippe Advanced Research department.

Dial

Two-tone graphite and ebony black, vertical satin-finish, white transfer-printed hour markers. White gold baton-style hands, white varnished. 

Case

Rose gold. Diameter: 40.5 mm. Thickness: 10 mm. Water-resistant to 30m. Sapphire crystal case back.

Strap

Alligator leather with square scales, hand-stitched, matte black. Rose gold prong buckle.

Movement

31-260 REG QA

Self-winding

Regulator-style display: hour and seconds subdials, sweep minutes hand

Annual Calendar Day, date and month in apertures

Diameter: 33 mm. Thickness: 5.08 mm. Number of parts: 313. Number of jewels: 31. Power reserve: min. 38 hours – max. 48 hours. Winding rotor: 22K gold off-center minirotor. Gyromax®. Frequency: 23,040 semi-oscillations/hour (3.2 Hz). Balance spring: Spiromax®. Distinctive sign: Patek Philippe Seal.