A Calatrava with a 24-hour alarm
A Grand Complication equipped with a 24-hour alarm function enabling the user to set the alarm in an intuitive way. The white gold case bearing a hobnail pattern frames an exceptionally refined textured green lacquered dial. The alarm function of self-winding AL 30-660 S C caliber chimes elegantly, with a single hammer striking a classic gong.
Dial
Textured lacquered green with black-gradient rim, white gold applied numerals with luminescent coating. White gold syringe-shaped hands with luminescent coating.
Case
White gold. Caseband and pusher guilloched with hobnail pattern. Skeletonized lugs. Diameter: 41 mm. Thickness: 12.22 mm. Water-resistant to 30m. Sapphire crystal case back.
Strap
Alligator leather with square scales, patinated green (originally fitted). Calfskin, nubuck finish, beige (additionnal strap). White gold patented triple-blade fold-over clasp.
Movement
AL 30-660 S C
Self-winding
24-hour alarm with chime on a classic gong
Alarm time displayed in an aperture
Alarm on/off indication in an aperture
Alarm day/night indication in an apertures
Date by hand
Sweep seconds
Diameter: 31 mm. Thickness: 6.6 mm. Number of parts: 524. Number of jewels: 52. Power reserve: min. 42 hours – max. 52 hours. Winding rotor: 21K gold central rotor. Balance: Gyromax®. Frequency: 28,800 semi-oscillations/hour (4 Hz). Balance spring: Spiromax®. Distinctive sign: Patek Philippe Seal.
