Silver-tone stainless steel case featuring engine-turned silver-tone bezel and solid case back. Round case size: 34 mm. Equipped with screw down crown. Includes blue dial (Ref. blso) accented by luminous markers, analog display with silver-tone hands and minute markers around the outer rim. Date window positioned at the 3 o'clock mark. Powered by Rolex Calibre 3135 automatic movement containing 31 jewels, beating at 28800 vph. Estimated power reserve: approximately 48 hours. Set to Chronometer status. Comes with a silver-tone stainless steel Oyster bracelet and fold over clasp with safety release mechanism.