Rolex Calibre 3130 automatic chronometer movement, 28800 vph, approximately 48-hour power reserve. Features a black dial with sword-style hands and index markers. Includes a uni-directional rotating stainless steel bezel in black. Equipped with scratch-resistant sapphire crystal, screw-down crown, solid case back, silver-tone stainless steel case, round shape measuring 40 mm wide and 11 mm thick. Comes on an Oyster bracelet with deployment clasp. Water resistant to 300 meters / 1000 feet. Analog dial type displaying hours, minutes, seconds. Chronometer certified functions. Swiss Made sport watch.