Silver-tone stainless steel case with a two-tone (silver-tone and yellow gold-tone) 18kt yellow gold and stainless steel oyster bracelet. Fixed black 18kt yellow gold bezel. Black dial with yellow gold-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 3235 Automatic movement, based upon Rolex 3035, 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: 43 mm. Fold over clasp with a safety release. Water resistant at 1220 meters / 4000 feet. Functions: date, hour, minute, second, chronometer. Sea-dweller Series. Dive watch style. Watch label: Swiss Made. Item Variations: 126603-0001, 126603. Pre-owned Rolex Sea-Dweller Automatic Chronometer Black Dial Mens Watch 126603 BKSO.