Detailed features & specificationsUNICOBy developing its own automatic chronograph movement, Hublot wanted it to be a?? like all of its creations a?? the first, different and unique. As the soul of the watch, this movement with an a??open hearta?? reveals its completely re-imagined design, with double coupling system and column-wheel from the dial side as well as a 72-hour power reserve. Its construction of 354 components has been simplified as much as possible to improve reliability and robustness.??CERAMICFor Hublot, materials are an integral part of their watchesa?? design. They must complement their design, while protecting their mechanism and withstand the test of time. As such, the Manufacture has chosen to use high-tech ceramic for certain bezels and cases; it is an ultra-tough and almost entirely scratch-proof material (apart from the diamond) with a base of zirconium sintered at very high temperatures.??Technical DetailsSize: 42 mmCase : Polished Green CeramicBezel : Polished Green Ceramic with 6 H-shaped Black-plated Titanium ScrewsWater Resistance : 100m or 10 ATMCrystal : Sapphire with Anti-reflective TreatmentDial : Green SkeletonMovement : HUB1280 UNICO Manufacture Self-winding Chronograph Flyback Movement with Column WheelPower Reserve : 72 HoursStrap : Black and Green Structured Lined Rubber StrapsClasp : Black Ceramic and Black-plated Titanium Deployant Buckle Clasp