Unique 2 Movement UNICO When developing its own self-winding chronograph movement, Hublot wanted it to be, like all its creations, the first, different and unique. As the heart of the watch, this "open-heart" movement reveals its completely reinvented design, with a double coupling system and column wheel on the dial side, as well as a 72-hour power reserve. Its construction consists of 354 components that have been simplified to the maximum to improve their reliability and robustness. Materials KING GOLD Master of fusion and alchemist of precious metals, Hublot has developed a new gold colour with a warmer tone than traditional 18-carat 5N gold. Named King Gold, this exclusive alloy contains platinum and lends itself perfectly to all types of polishing and satin-finishing operations. In Hublot watches, it is combined with the most unexpected materials, such as high-tech ceramics, rubber or carbon. REFERENCE 421. OX. 1180. RX. 1104 SIZE 44 mm CASE Satin-finished and polished 18K King gold BEZEL Satin-finished and polished 18K King gold Set with 126 diamonds for a total of ~1.40 carats with 6 H-shaped titanium screws WATERPROOFNESS 100 g or 10 ATM CRYSTAL Sapphire with anti-reflective treatment DIAL Matte black skeletonized MOVEMENT HUB1280 UNICO MOVEMENT Manufacture Automatic chronograph Fly-back movement with column wheel POWER RESERVE 72 hours STRAP AND CLASP Structured black rubber strap with stripes CLASP 18K King gold and titanium folding clasp with treatment.