Patek Phillippe Nautilus Perpetual Calendar

The first Grand Complication in the Nautilus collection, the Reference 5740/1 Nautilus perpetual calendar, offers a distinctive blend of sports appeal and technical sophistication. Thanks to the famous ultra-thin self-winding caliber 240 Q movement, the case (water resistant to 60 m) is remarkably svelte, making this watch Patek Philippe’s thinnest perpetual calendar. The bracelet is equipped with a new fold-over clasp providing optimized security.

WATCH
Ultra-thin mechanical self-winding movement. Caliber 240 Q. Day, date, month, leap year and 24-hour indication by hands.

DIAL
Blue sunburst, gold applied hour markers with luminescent coating.

CASE
White gold. Screw-down crown. Sapphire-crystal case back. Water resistant to 60m. Diameter (10-4 o’clock): 40 mm. Height: 8.42 mm.

BRACELET / STRAP
White gold. Nautilus fold-over clasp.

Perpetual calendar. Day, date, month, leap year and 24-hour indication by hands. Moon phases. 
Diameter: 27.5 mm
Height: 3.88 mm
Parts: 275
Bridges: 8
Jewels: 27
Power reserve: min. 38 hours, max. 48 hours. 22K gold off-center mini-rotor
Balance: Gyromax®
Vibrations/hour: 21 600 (3 Hz)
Balance spring: Spiromax®
Hallmark: Patek Philippe Seal
Patent: CH 595 653