18kt rose gold case with a black (alligator) leather strap. Fixed black ceramic bezel. Black dial with luminous rose gold hands and index hour markers. Minute markers around the outer rim. Dial Type: Analog. Luminescent hands and markers. Chronograph - three sub-dials displaying: 60 second, 30 minute and 12 hour. Hublot calibre HUB4100 automatic movement with 42 hour power reserve. Scratch resistant sapphire crystal. Screw down crown. Solid case back. Case diameter: 44 mm. Round case shape. Band width: 20.3 mm. Band length: 8 inches. Deployment clasp. Water resistant at 100 meters / 330 feet. Luxury watch style. Hublot Big Bang 44mm Evolution Men's Watch 301PM1780GR.