Breguet Marine 9517

Breguet's Marine 9517, reference 9517ST/5W/584, has a 33.8 mm steel case built for smaller wrists. The case measures 9.9 mm thick, with lugs set 18.5 mm apart, and the dial sits under a sapphire crystal. Inside is the self-winding calibre 591 A, offering 38 hours of power reserve. The mother-of-pearl dial shows a central seconds hand and a date aperture at 3 o'clock, with luminous hands and indices for night reading. A sapphire caseback lets the movement show through. The watch comes on a rubber strap fitted with a steel folding clasp. That clasp helps keep the case sealed to 50 metres.