Silver-tone stainless steel case with a silver-tone stainless steel rolex oyster bracelet. Fixed domed silver-tone stainless steel bezel. Black dial with silver-tone hands and luminous stick hour markers. Minute markers around the outer rim. Dial Type: Analog. Luminescent hands and dial markers. Date display at the 3 o'clock position. Rolex Calibre 2235 Automatic movement, containing 31 Jewels, bitting at 28800 vph, and has a power reserve of approximately 48 hours. Scratch resistant sapphire crystal. Screw down crown. Round case shape, case size: 31 mm. Oysterlock clasp. Water resistant at 100 meters / 330 feet. Functions: date, hour, minute, second, chronometer. Datejust Lady 31 Series. Luxury watch style. Watch label: Swiss Made. Item Variations: 178240, 178240-BKSO, Rolex-178240, Rolex-178240-BKSO. Rolex Datejust Lady 31 Black Dial Stainless Steel Oyster Bracelet Automatic Watch 178240BKSO.