18kt yellow gold case with a 18kt yellow gold rolex oyster bracelet. Fixed 18kt yellow gold bezel. Black dial with gold-tone hands and diamonds hour markers. Tachymeter. Dial Type: Analog. Chronograph - three sub-dials displaying: 60 second, 30 minute and 12 hours. Rolex Calibre 4130 automatic movement with a 72-hour power reserve. Scratch resistant sapphire crystal. Screw down crown. Solid case back. Case size: 40 mm. Round case shape. Water resistant at 100 meters / 330 feet. Functions: chronograph, hour, minute, second. Luxury watch style. Watch label: Swiss Made. Rolex Cosmograph Daytona Black Diamond Dial Men's 18kt Yellow Gold Oyster Watch 116508BKDO.