With its pure lines, the calatrava is recognized as the very essence of the round wristwatch and one of the finest symbols of the Patek Philippe style. Supremely elegant, it charms each new generation of watch lovers by its timeless understated perfection.
 

Watch
Self-winding mechanical movement. 
Caliber : 26-330 S C/430.  
Date in an aperture. 
Center sweep second hand.
Dial : Ivory lacquered, gold-applied hour markers.
Case: yellow gold. 
Case diameter: 39 mm. 
Height: 9.24 mm. 
Water-resistant : 30 m. 
Sapphire crystal case back protected by an invisibly-hinged dust cover.
Strap : Shiny alligator with square scales, chocolate brown. 
Prong buckle.
Diameter: 27 mm. 
Thickness: 3.32 mm. 
Number of parts: 212. 
Jewels: 30. 
Power reserve: min. 35 hours – max. 45 hours. 
Winding rotor: 21K gold central rotor. 
Balance: Gyromax®. 
Frequency: 28,800 semi-oscillations/hour (4 Hz). 
Balance spring: Spiromax®. 
Hallmark: Patek Philippe Seal.