Stainless steel case with a black alligator gummy rubber strap. Fixed black ceramic bezel. Black skeleton dial with luminous hands and index hour markers. Minute markers around the outer rim. Dial Type: Analog. Luminescent hands and markers. Date display appears between the 4 and 5 o'clock positions. Chronograph - three sub-dials displaying: 60 second, 30 minute and 12 hour. Automatic movement with a 42 hour power reserve. Scratch resistant sapphire crystal. Pull / push crown. Solid case back. Case diameter: 44 mm. Case thickness: 15 mm. Round case shape. Band width: 25 mm. Band length: 8 inches. Push button fold over clasp. Water resistant at 100 meters/ 330 feet. Functions: hours, minutes, seconds, calendar, chronograph. Sport watch style. Watch label: Swiss Made. Hublot Big Bang Aero Chronograph Black Skeleton Dial Black Rubber Strap Men's Watch 311-SM-1170-GR.