Breguet Marine 33.8mm | 9517ST/5W/584Polished stainless steel case with Breguet's signature coined edge. Contoured crown guards. Mother of Pearl dial with a marea pattern motif. Polished hands. Applied hour markers. Minute seconds track. Date window at 3 o'clock. The rotor features a mother of pearl inlay with a marea pattern motif. Breguet caliber 591A with a silicon balance spring and escapement lever, beats at 28,800 vph (4Hz), contains 25 jewels and has an approximate power reserve