Patek Phillippe Calatrava Weekly Calendar

Patek Philippe introduces a new complication to its calendar watches: the weekly calendar, a semi-integrated mechanism displaying the current week number, in addition to the day and date. A particularly useful feature for the modern businessman.

This steel Calatrava Weekly Calendar also houses a completely new self-winding movement with optimized performance. The dial is notable for its exclusive letters and numerals which authentically reproduce handwritten characters.

WATCH
Self-winding mechanical movement. Caliber 26‑330 S C J SE. Day and week number by hands. Date in an aperture. Sweep seconds hand.

DIAL
Silvery opaline, blackened gold applied hour markers.

CASE
Steel. Sapphire-crystal case back. Water resistant to 30m. Diameter: 40 mm. Height: 10.79 mm.

BRACELET / STRAP
Calfskin, hand-stitched, light brown. Prong buckle.

Weekly calendar. Date. Sweep seconds hand. 
Diameter: 27 mm
Height: 4.82 mm
Parts: 304
Jewels: 50
Power reserve: min. 35 hours – max. 45 hours. Central rotor in 21K gold, unidirectional winding
Balance: Gyromax®
Semi-oscillation/hour: 28 800 (4 Hz)
Balance spring: Spiromax®
Hallmark: Patek Philippe Seal