Silver-tone stainless steel case with a silver-tone stainless steel oyster bracelet. Uni-directional rotating black ceramic bezel. Black dial with silver-tone hands and index hour markers. Minute markers around the outer rim. Dial Type: Analog. Luminescent hands and markers. Date display at the 3 o'clock position. Rolex Calibre 3135 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. Solid case back. Round case shape, case size: 44 mm, case thickness: 18 mm. Band width: 15.5 mm, band length: 8 inches. Fold over clasp with a safety release. Water resistant at 3900 meters / 12800 feet. Functions: date, hour, minute, second, chronometer. Sea-dweller Series. Luxury watch style. Watch label: Swiss Made. Item Variations: 116660, 116660-BKSO , Rolex-116660, Rolex-116660-BKSO 116660, 116660-BKSO, Rolex. Pre-owned Rolex Sea-Dweller Automatic Chronometer Black Dial Mens Watch 116660 BKSO.