
Annual calendar featuring day and month indicators via hands and a date aperture. Includes moon phases and sweep seconds. Diameter: 30 mm; height: 5.32 mm; 319 components. Power reserve: 35 to 45 hours. Features a 21K gold central winding rotor, Gyromax® balance, and Spiromax® balance spring. Frequency: 28,800 semi-oscillations/hour (4 Hz). 34 jewels. Patek Philippe Seal.