Stainless steel case with a stainless steel oyster bracelet with 18kt yellow gold center links. Fixed 18kt yellow gold bezel showing tachymeter markings. Black set with diamonds dial with luminous gold-tone hands and diamond hour markers. Minute markers around the outer rim. Dial Type: Analog. Luminescent hands. Chronograph – three sub-dials displaying: 60 seconds, 30 minute, and 12 hours. Automatic movement with a 72 hour power reserve. Scratch resistant sapphire crystal. Screw down crown. Solid case back. Case diameter: 40 mm. Round case shape. Fold over oysterlock clasp. Water resistant at 100 meters / 330 feet. Functions: chronograph, hour, minute, second. Luxury watch style. Watch label: Swiss Made. Rolex Cosmograph Daytona Automatic Black Diamond Dial 18kt Yellow Gold and Stainless Steel Mens Watch 116523BKDO.