The Hublot V4 upgraded version features the following enhancements: it utilizes an original casing design, with the side lugs no longer made of plastic. The upgraded true tourbillon movement strengthens shock resistance, addressing issues found in the ordinary market versions such as poor stitching and high movement return rates. It replicates 90% of the original structure, with a one-to-one size, laminated sapphire crystal glass, and a matching rubber and leather strap, further highlighting the quality that distinguishes it from smaller manufacturers.The specific selling points can be summarized as six high elements:.1. High-precision true tourbillon movement, offering both a premium feel and stability.2. High-quality seamless stitching between the bezel, case, and back cover; this upgrade features steel lugs, setting it apart from the plastic used in the market!.3. High fidelity, with 90% accuracy in replicating the original structure and a one-to-one size.4. High shock resistance with an enhanced movement design that significantly reduces repair rates.5. High-strength lens made of scratch-resistant sapphire and polyethylene explosion-proof film, capable of withstanding strong impacts.6. High aesthetic appeal with a cool, striking appearance, fully skeletonized movement showcasing an impressive mechanical gear feel.The Hublot Big Bang men's series watches are truly worth having.