Stainless steel and 18kt yellow gold case with a steel and 18kt yellow gold jubilee bracelet. Fixed 18kt yellow gold bezel. Black mother of pearl dial with gold-tone hands and diamond hour markers. Dial Type: Analog. Date display at the 3 o'clock position. Rolex Calibre 2236 Automatic movement, based upon Rolex 2235, containing 31 Jewels, bitting at 28800 vph, and has a power reserve of approximately 55 hours. Scratch resistant sapphire crystal. Screw down crown. Solid case back. Round case shape. Case size: 31 mm. Folding clasp. Water resistant at 100 meters / 330 feet. Functions: date, hour, minute, second. Luxury watch style. Watch label: Swiss Made. Rolex Datejust 31 Black Mother of Pearl Diamond Dial Ladies Steel and 18kt Yellow Gold Jubilee Watch 278243BKMDJ.