Hublot Spirit of Big Bang 42mm Titanium Ceramic 642.NM.0170.RX SKELETON BLACK RUBBER

From a collector’s perspective, Hublot’s Spirit of Big Bang line represents a significant and innovative direction for the brand, merging their pioneering “Art of Fusion” philosophy with a groundbreaking tonneau-shaped case. This reference, 642.NM.0170.RX, is constructed from micro-blasted titanium, a material chosen for its high strength-to-weight ratio and hypoallergenic properties, paired with a black ceramic bezel that offers exceptional scratch resistance. The 42mm case size provides a modern presence on the wrist while remaining versatile. The entire design is driven by an avant-garde skeletonized dial, which offers a direct, unobstructed view of the movement’s mechanics. This is not merely an aesthetic choice but a technical statement, showcasing the intricate architecture within. The watch is fitted with a black rubber strap, a signature Hublot material that ensures durability and comfort, secured with a titanium deployant buckle clasp.

The heart of this timepiece is the HUB4700 skeletonized automatic chronograph movement. This caliber is noteworthy as it is based on the Zenith El Primero, a historically significant and highly respected chronograph engine known for its high-frequency operation at 36,000 vibrations per hour, which translates to a precision of 1/10th of a second. The skeletonization process is executed with technical purpose, removing non-essential material from the plates and bridges to reduce weight while maintaining structural integrity, with surfaces finished with perlage and polished bevelling. The primary complications are a central chronograph seconds hand, a 30-minute counter at 3 o’clock, and a small seconds counter at 9 o’clock, all presented in a layout that maximizes legibility despite the openworked nature of the dial.

This particular example is in new, mint condition, showing no signs of wear on the case, bezel, crystal, or strap. It is accompanied by its full set, including the official Hublot e-warranty. In the current market, the Spirit of Big Bang collection is positioned as a core and collectible part of Hublot’s modern portfolio. Models in titanium, especially with a full skeleton dial, are consistently sought after due to their technical appeal and wearability. The combination of a revolutionary case design, a historically important movement platform, and Hublot’s distinctive material science makes this watch a solid acquisition. Its value is underpinned by its condition, complete documentation, and its place within Hublot’s innovative and expanding product lineage.