Silver-tone stainless steel case and bracelet. Fixed silver-tone stainless steel bezel. Black dial with luminous silver-tone hands and index hour markers. Minute markers around the outer rim. Dial Type: Analog. Luminescent hands and markers. Rolex Calibre 3230 Automatic movement, containing 31 Jewels, bitting at 28800 vph, and has a power reserve of approximately 70 hours. Scratch resistant sapphire crystal. Screw down crown. Solid case back. Round case shape, case size: 36 mm. Band length: 6 3/4 inches. Oysterlock clasp. Water resistant at 100 meters / 330 feet. Functions: hour, minute, second, chronometer. Oyster Perpetual Series. Sport watch style. Watch label: Swiss Made. Pre-owned Rolex Oyster Perpetual Automatic Chronometer Black Dial Unisex Watch 126000BKSO.