An avant-garde material. By developing its own automatic chronograph movement, Hublot wanted it to be – like all of its creations – the first, different and unique. As the soul of the watch, this movement with an “open heart” 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. For Hublot, materials are an integral part of their watches’ 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.

Gender	Men
Brand	Hublot
Series	Big Bang
Model No.	451.GX.5220.GX
Movements	HUB1280 UNICO Manufacture Self-winding Chronograph Flyback Movement with Column Wheel
Power reserve	72 Hours
Case	Satin-finished and Polished Green Ceramic
Case Diameter	42 mm
Bezel	Satin-finished and Polished Blue Ceramic with 6 H-shaped Titanium Screws
Water Resistance	100m or 10 ATM
Crystal	Sapphire with Anti-reflective Treatment
Dial	Mat Green Skeleton Dial
Strap	Satin-finished and Polished Blue Ceramic Bracelet
Clasp	Titanium Deployant Buckle Clasp
Conditions	Brand New In Box (BNIB)
What's inside box	1x Hublot Big Bang 42 - 451.GX.5220.GX Integrated Ceramic Green Skeleton Dial Ceramic Straps 1x Hublot Manual Book 1x Watch Box