HUBLOT Soul BIG BANG series. Model 642.NX.0170.RX introduces a new Spirit of Big Bang limited edition wristwatch inspired by racing! The watch combines all the iconic elements of the Spirit of Big Bang collection with a new cask-shaped case. The case is made of titanium and resin, with the help of six H-shaped screws to create a "sandwich" structure, conveying the concept of "integrated technology". The perfect reproduction of the exclusive custom HUB4700 movement, the original folding buckle, the custom fluororubber strap, the watch is equipped with a "one-button" quick change strap system, the wearer can easily and quickly replace the strap with a single click!!