PATEK PHILIPPE NAUTILUS REF. 5726/1A-014 CAL. 324 S QA LU 24H/303 SELF-WINDING ANNUAL CALENDAR - 24 HOUR - MOON PHASES

5726/1A - NAUTILUS 
SELF-WINDING

A NEW BLUE DIAL SHADING TO BLACK FOR THE STEEL VERSION
The steel Nautilus, endowed with an Annual Calendar and moon-phase display, now features a new blue dial inspired from the dial color of the original Nautilus model of 1976. Horizontal embossing and subtle grading from blue to black at the dial's periphery create a powerful yet refined aesthetic that perfectly complements the sheen of the metal.
This elegantly sporty exterior, water-resistant to 120 m, conceals a caliber 324 S QA LU 24H/303 self-winding movement comprising 347 parts, which can be admired through a sapphire crystal case back.
WATCH
Self-winding mechanical movement. Caliber 324 S QA LU 24H/303. Day, date, month in apertures. Moon phases. 24-hour indication. Sweep seconds hand.
DIAL
Blue, black gradated, gold applied hour markers with luminescent coating.
CASE
Steel. Screw-down crown. Sapphire-crystal case back. Water resistant to 120 m. Case diameter (10-4 o'clock): 40.5 mm. Height: 11.3 mm.
STRAP
Steel. Nautilus fold-over clasp.

CALIBER
324 S QA LU 24H
SELF-WINDING
Annual Calendar. 24-hour indication. Moon phases. Diameter: 33.3 mm. Height: 5.78 mm. Parts: 347. Bridges: 10. Jewels: 34. Power reserve: Min. 35 hours - max. 45 hours. Central rotor in 21K gold, unidirectional winding. Balance: Gyromax®. Vibrations/hour: 28 800 (4 Hz). Balance spring: Spiromax®. Hallmark: Patek Philippe Seal.