A new version in rose gold with a two-tone graphite-and-black dial .Patek Philippe revisits the unique style of its Annual Calendar Regulator by presenting it in rose gold, paired with a two-tone dial in graphite and ebony-black with a vertical satin finish. The caliber 31-260 REG QA self-winding movement, designed specially for this model, is notable for its high-tech regulator, incorporating a Pulsomax® escapement and a Spiromax® balance spring in Silinvar® – both developed by the “Patek Philippe Advanced Research” department.

Watch
Self-winding mechanical movement. 
Caliber : 31-260 REG QA. 
Regulator-style display: hour and seconds subdials, sweep minutes. 
Day, date, month in apertures.
Dial :  Two-tone graphite and ebony black, vertical satin finish, white transfer-printed.
Case : Rose gold. 
Diameter: 40.5 mm. 
Height: 10 mm. 
Water-resistant : 30 m. 
Sapphire crystal case back.
Strap : Alligator leather with square scales, hand-stitched, matte black. 
Prong buckle.
Annual Calendar. 
Diameter: 33 mm. 
Thickness: 5.08 mm. 
Number of parts: 313. 
Jewels: 31. 
Power reserve: min. 38 hours - max. 48 hours. 
22K gold off-center mini-rotor. 
Escapement: Pulsomax®. 
Balance: Gyromax®. 
Vibrations/hour: 23 040. 
Balance spring: Spiromax®. 
Hallmark: Patek Philippe Seal.