177200-0018 Stainless steel case with a silver-tone stainless steel rolex oyster bracelet. Fixed domed stainless steel bezel. Dark grey dial with Roman numeral hour markers. Minute markers around the outer rim. Dial Type: Analog. Rolex Calibre 2231 automatic movement with a 48-hour power reserve. Scratch resistant sapphire crystal. Screw down crown. Solid case back. Round case shape. Case size: 31 mm. Oysterlock clasp. Water resistant at 100 meters / 330 feet. Functions: hour, minute, second, chronometer. Luxury watch style. Watch label: Swiss Made. Rolex Oyster Perpetual 31 Automatic Chronometer Ladies Watch 177200 Dark Grey.