Featuring instantaneous day-date displays jumping at midnight, this Calatrava is also distinguished by its eight-day power reserve. Its manually wound movement is equipped with a Pulsomax® escapement in Silinvar®. The entire rim of the round white gold case-middle is adorned with Patek Philippe's emblematic guilloché hobnail pattern.
Technical characteristics
Dial
Textured blue with black-gradient rim, white gold applied numerals with white luminescent coating. White gold syringe-shaped hands with white luminescent coating.
Case
White gold. Caseband guilloched with hobnail pattern. Diameter: 41 mm. Thickness: 10.52 mm. Water-resistant to 30m. Sapphire crystal case back.
Strap
Calfskin, fabric pattern, navy blue (originally fitted). Calfskin, grained taupe, (additional strap). White gold patented triple-blade fold-over clasp.
Movement
31-505 8J PS IRM CI J
Manual winding
Instantaneous date by hand
Instantaneous day in aperture
8-day power reserve indication
Small seconds
Diameter: 32 mm. Thickness: 5.05 mm. Number of parts: 256. Number of jewels: 28. Power reserve: min. 192 hours (8 days). Frequency: 28,800 semi-oscillations/hour (4 Hz). Balance spring: Spiromax®. Distinctive sign: Patek Philippe Seal.
