Stainless steel case with a stainless steel rolex oyster bracelet. Fixed - domed 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. Automatic movement. Scratch resistant sapphire crystal. Case diameter: 31 mm. Round case shape. Deployment clasp. Water resistant at 100 meters / 330 feet. Functions: hour, minute, second. Luxury watch style. Watch label: Swiss Made. Item Variations: 177200, 177200-BKABLSO, Rolex-177200, Rolex-177200-BKABLSO. Rolex Oyster Perpetual 31 mm Black Dial Stainless Steel Rolex Oyster Automatic Unisex Watch 177200BKABLSO.