Bold, technical, and unmistakably Hublot, the Spirit of Big Bang Chronograph Ref. 642.NX.0170.RX combines lightweight titanium, an architectural skeleton dial, and a high-frequency automatic chronograph movement in Hublot’s signature tonneau-shaped case.
The 42mm titanium case features a combination of satin-brushed and polished surfaces that emphasize the sculpted profile of the Spirit of Big Bang. Its titanium bezel incorporates brushed, microblasted, and polished finishes and is secured by Hublot’s signature H-shaped titanium screws, while black composite resin elements create a sharp contrast against the metal construction.
At the center of the watch is its skeletonized dial, exposing the mechanical architecture beneath. Luminous hands and applied hour markers provide legibility without obscuring the movement, while the openworked chronograph layout includes a 30-minute counter at 3 o’clock, 12-hour counter at 6 o’clock, running seconds at 9 o’clock, and date display at 4:30.
Powering the watch is the Hublot HUB4700 automatic chronograph movement, derived from the celebrated high-frequency Zenith El Primero architecture. Operating at 36,000 vibrations per hour (5 Hz), the HUB4700 features 31 jewels and approximately 50 hours of power reserve, delivering the mechanical performance to match the watch’s aggressive design.
A black rubber strap completes the modern sports-watch aesthetic while providing excellent everyday comfort. Hublot’s interchangeable strap system allows for quick strap changes without compromising the integrated appearance of the case.
This example is presented in mint condition and comes with its original Hublot box and warranty card.
The Spirit of Big Bang takes Hublot’s unmistakable design language in a different direction. Its sculpted tonneau case, exposed mechanics, titanium construction, and integrated rubber strap create a watch that feels both highly technical and unmistakably modern.
What makes this reference particularly compelling is what sits behind the skeleton dial. The HUB4700 high-frequency automatic chronograph brings serious mechanical pedigree to the design, while the lightweight titanium case makes the substantial 42mm watch surprisingly comfortable on the wrist.
For someone searching for a Hublot Spirit of Big Bang Titanium Skeleton Chronograph, Ref. 642.NX.0170.RX delivers the combination that defines Hublot at its best: innovative materials, visible mechanics, bold architecture, and high-performance Swiss watchmaking.
This Hublot Spirit of Big Bang Chronograph is presented in mint condition with its original Hublot box and warranty card.
Every luxury watch offered by AZZI Jewelers is carefully inspected and professionally evaluated before being offered for sale, with its condition and included accessories clearly represented.
Titanium. Skeleton. High-frequency chronograph. One available.
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