Hublot 641.NX.0173.LR Spirit of Big Bang Titanium Skeleton Dial

The Hublot Spirit of Big Bang reference 641.NX.0173.LR is a striking expression of contemporary horology, housed in a 42 mm tonneau‑shaped titanium case that debuted in the late 2010s. Powered by the high‑frequency HUB4700 automatic skeleton chronograph caliber—derived from the legendary Zenith El Primero and beating at 36,000 vph with a 50‑hour power reserve—this model offers both precision and technical pedigree. The openworked sapphire dial reveals the inner workings of the movement, framed by applied silver indexes and skeletonized luminous hands, all under a sapphire crystal with anti‑reflective treatment. Water resistant to 100 meters, the design balances sporty robustness with refined mechanical artistry. The case’s satin‑finished and polished titanium surfaces, secured by H‑shaped screws, reflect Hublot’s fusion of avant‑garde aesthetics and industrial craftsmanship. Fitted with a hybrid black alligator and rubber strap secured by a titanium deployant buckle, the watch is both comfortable and secure. As part of the Spirit of Big Bang line, this reference stands out for its skeletal mechanics and chronograph function, offering collectors a rare blend of technical complexity and bold design. Its use of the celebrated HUB4700 movement and distinctive tonneau case make it a compelling piece for aficionados of modern skeleton chronographs. Excellent Condition with Hublot box and papers dated 2018.