18kt yellow gold case with a black rubber strap. Bi-directional rotating black ceramic bezel. Black dial with index hour markers. Dial Type: Analog. 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. Solid case back. Round case shape, case size: 42 mm. Oysterlock clasp. Water resistant at 100 meters / 330 feet. Functions: date, hour, minute, second, chronometer. Yacht Master Series. Luxury watch style. Watch label: Swiss Made. Rolex Yacht Master Automatic Chronometer Black Dial 18kt Yellow Gold Men's Watch M226658. Origanal plastic is still on this watch.