Stainless steel case with a stainless steel bracelet. Fixed diamond set 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. Automatic movement. Ap caliber 3120 beats at 21,600 vph, 40 jewels engine. Scratch resistant sapphire crystal. Screw down crown. Skeleton case back. Case diameter: 37 mm. Case thickness: 9.8 mm. Octagonal case shape. Folding clasp. Water resistant at 50 meters / 165 feet. Functions: date, hour, minute, second. Luxury watch style. Watch label: Swiss Made. Audemars Piguet Royal Oak Automatic Diamond Black Dial Stainless Steel Ladies Watch 15451ST.ZZ.1256ST.01.