Hublot Big Bang Unico Automatic Skeleton Dial Mens Watch 471.QX.7127.RX. Black carbon fiber case with a blue and black structured lined rubber strap. Fixed black carbon fiber bezel. Black skeleton dial with luminous silver-tone hands and alternating Arabic numeral and index hour markers. Minute markers around the outer rim. Hublot calibre HUB1251 automatic movement with a 72-hour power reserve. Scratch resistant sapphire crystal. Screw down crown. Transparent case back. Round case shape. Case size: 45 mm. Case thickness: 15.85 mm. Band width: 20 mm. Carbon fiber and black-plated titanium deployment clasp. Water resistant at 100 meters / 330 feet. Functions: GMT, second time zone, hour, minute, second, day/night indicator.