Hublot, Big Bang Series, model: 301.CK.1140.GR, diameter 44mm, Black Vasters-style ceramic case, powerful blackened dial with three-eye chronograph and date display function, diamond-encrusted bezel (aftermarket diamonds) for a 500,000-yuan wearing effect, rubber strap with folding clasp for comfortable and light wearing, transparent back movement with luminous effect, single watch.