Brand New Authentic Hublot Big Bang Unico Limited Edition Automatic Chronograph Skeleton Dial Sapphire Case Transparent Rubber Strap Men's Luxury Watch Model 441.JX.4802.RT. Sapphire Crystal case with Transparent Rubber strap. Titanium Deployment with Push Button clasp. Fixed. Polished Sapphire Crystal with 6 H-shaped Titanium Screws bezel. Dial description: Silver Tone Luminous Hands and Arabic Numerals/Stick Hour Markers with Minute Markers Around the Outer Rim, the Date at 3 o'clock and 2 Sub-dials on a Skeleton dial. Swiss Automatic. Flyback Chronograph movement. Chronograph sub-dials display: Small Seconds, 60 Minute. Calendar: Date at 3 o'clock. Powered by Hublot Calibre HUB1280 engine with 72 hours power reserve. Watch functions: Date, Power Reserve, Hour, Minute, Second, Flyback Chronograph. Push-Pull crown. Scratch Resistant Sapphire crystal. Unique case shape. Case size: 42mm. Transparent case back. 100 Meters - 330 Feet water resistant. 2-year WatchMaxx warranty. Also known as model: 441JX4802RT.