BBF's heavyweight classic new product, the BIG BANG Soul Series, is top-of-the-line when it is produced, no need to upgradeHublot has integrated the spiritual connotation of the Big Bang series into another series, and the barrel-shaped shape is unique. The case of this series adopts a clever multi-layer structure, making it possible to integrate various materials, colors and finishes. BBF's "Exclusive" HUB 4700 automatic winding chronograph movement is the only one on the market that is the original hollow calendar ring. It is also the only one that uses the original material, grade 5 titanium, making the watch light and comfortable. 42mm sapphire crystal mirror, colorful pattern hands, one-button quick-release rubber strap that can be interchanged with the original. Ceiling level (produced by BBF, must be a fine product