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 30 m, conceals a caliber 26-330 S QA LU 24H self-winding movement comprising 339 parts, which can be admired through a sapphire crystal case back.

Watch
Self-winding mechanical movement. 
Caliber 26-330 S QA LU 24H/441.
Annual Calendar. 
Day, date and month in apertures.
Moon phases. 
24-hour indication. 
Sweep seconds.
Dial : Blue, black gradated, gold applied hour markers with luminescent coating.
Case : Steel. 
Case diameter (10-4 o’clock): 40.5 mm. 
Height: 11.3 mm. 
Water resistant : 30 m. 
Screw-down crown. 
Sapphire crystal case back.
Bracelet : Steel. 
Patented fold-over clasp with lockable adjustment system.