Hublot Spirit of Big Bang Impact Review
The Hublot Spirit of Big Bang Impact is not a watch that whispers. It is a tonneau-shaped statement piece with a skeletonized chronograph, a rubber strap, and a design language that owes more to contemporary architecture than to traditional watchmaking. For young collectors, that is exactly the appeal — and exactly the risk. The Impact is easy to love on the wrist and harder to justify as a financial asset.
This review is written from a market perspective. We will look at the HUB4700 movement, the wearing experience, the reference family, the competitive set, and the secondary market. The goal is not to repeat the press release. It is to answer a practical question: if you are considering the Spirit of Big Bang Impact, should you buy it at retail, buy it pre-owned, or pass entirely?
The Market Context
Tonneau-shaped luxury sports watches have become a distinct sub-market. Richard Mille created the modern template, Audemars Piguet pushed the Royal Oak Offshore into oversized territory, and Hublot built a bridge between the two with the Spirit of Big Bang. The Impact treatment leans into the aggressive side of that bridge: open dial, strong bezel, integrated rubber, and a case that reads as a piece of machinery rather than a piece of jewelry.
That positioning matters for resale. Hublot is not a brand that enjoys the same collector premium as Patek Philippe, Rolex, or Audemars Piguet. The secondary market is deep enough to be liquid, but it is also disciplined. Full-retail buyers often take a significant hit in the first few years. Pre-owned buyers, by contrast, can enter at a meaningful discount and enjoy most of the wrist experience without the depreciation.
The Spirit of Big Bang Impact sits in a crowded field. It competes with the Royal Oak Offshore, the Zenith Defy El Primero 21, and a range of Richard Mille-adjacent pieces. Its advantage is visual drama at a lower entry point than the heavyweights. Its disadvantage is that the Hublot name does not carry the same investment gravity.
Brand History and the Spirit of Big Bang
Hublot was founded in 1980 by Carlo Crocco, and its original claim to fame was the fusion of a gold case with a rubber strap. That combination was radical at the time and helped establish the brand's identity around materials and contrast. Under LVMH ownership, and especially during Jean-Claude Biver's tenure, Hublot became known for the Art of Fusion, bold marketing, and the Big Bang family.
The Spirit of Big Bang takes the Big Bang formula and stretches it into a tonneau case. The result is a watch that feels more architectural and more aggressive than the round Big Bang. The Impact variant continues that theme with a skeletonized dial and a focus on mechanical transparency. It is not a heritage piece; it is a modern luxury object designed to be worn with confidence.
For collectors, the brand history matters because it explains the resale behavior. Hublot has built a strong retail business and a recognizable design language, but it has not built the same scarcity-driven collector base as older maisons. That is not a criticism of the watches; it is simply a fact of the market.
Movement: The HUB4700
The Spirit of Big Bang Impact is powered by the Hublot HUB4700, a skeletonized automatic chronograph. It is a high-beat movement, running at 36,000 vibrations per hour, with a power reserve of around 50 hours. The architecture is open and modern, with bridges and plates designed to be seen through the dial. It is not a traditional, finely finished movement in the sense of a Patek Philippe or a Vacheron Constantin, but it is appropriate for the Impact's industrial-modern aesthetic.
The HUB4700 is an in-house Hublot calibre, and it uses a column-wheel-style chronograph layout. The high beat rate gives the chronograph seconds hand a smooth, precise sweep, and the skeletonization makes the movement part of the visual experience. The movement is not COSC-certified, so you should not expect chronometer-grade consistency from every example. Real-world accuracy is typically within a few seconds per day, but sample variation exists.
From an ownership perspective, the HUB4700 is a specialized movement. It is not the kind of calibre that every independent watchmaker will service. That matters when you are buying pre-owned: a full service history is valuable, and a watch with unknown service history should be priced accordingly.
Case, Dial, and Wearability
The Impact's case is a tonneau shape with a broad bezel and a strong horizontal emphasis. The skeleton dial exposes the movement and creates a layered, three-dimensional effect. The chronograph counters and the date display are integrated into the open architecture, so the dial reads as a mechanical landscape rather than a conventional face. Legibility is acceptable for a skeleton watch, but it is not the primary goal. This is a watch designed to be looked at as much as read.
The rubber strap is a key part of the package. It integrates into the case and tapers toward the deployant clasp, which helps the watch sit securely on the wrist. The strap is soft and flexible, and the deployant makes it easy to adjust the fit. The caseback sits close to the skin, and the overall balance is better than the visual mass might suggest.
That said, the Impact is not a subtle watch. The tonneau case occupies a lot of wrist real estate, and the skeleton dial draws attention. On a smaller wrist, it will feel large and possibly top-heavy. On an average or larger wrist, it will feel purposeful and well balanced. The lesson is simple: try it on before you buy. This is not a watch that hides under a cuff.
On the Wrist
The first thing you notice is the presence. The Impact does not sit quietly on the wrist; it announces itself. The rubber strap helps soften the visual aggression, but the case and dial are still bold. The watch feels solid without being overly heavy, and the deployant clasp keeps the strap from flapping. It is comfortable enough for a full day of wear, provided you have the right wrist size.
The second thing you notice is the movement. The open dial gives you a view of the chronograph mechanism, and the high-beat seconds hand is satisfying to watch. The watch is at its best in casual and sporty settings, where the rubber strap and skeleton dial make sense. It can work with a jacket, but it will never be a dress watch. It is a luxury sports watch with a strong point of view.
For collectors who own multiple watches, the Impact is a good change-of-pace piece. It is not the watch you wear to a conservative business meeting, but it is the watch you wear when you want to signal that you are not interested in playing it safe. That is a legitimate use case, and it is where the Impact earns its place.
Accuracy and Daily Use
The HUB4700 is a high-beat automatic chronograph, and real-world accuracy is generally good. Most examples will run within a few seconds per day, but because the movement is not COSC-certified, you should expect some variation. Positional differences, temperature changes, and wear patterns will all affect timekeeping. If you are particular about accuracy, have the watch regulated by a watchmaker after purchase.
Daily use is straightforward. The automatic movement winds with normal activity, and the power reserve is sufficient for a weekend off the wrist. The chronograph is easy to operate, and the skeleton dial makes the engagement feel mechanical and satisfying. The rubber strap is durable and comfortable, and the deployant clasp is secure. The main daily-use consideration is the watch's size and visual presence; it is not a stealth piece.
Occasions and Presence
The Spirit of Big Bang Impact is best suited to sport, casual, and smart-casual occasions. It works with a t-shirt and jeans, a leather jacket, or a relaxed suit. It is not a formal watch, and it is not a travel watch in the traditional sense. It is a statement piece for someone who wants a luxury watch that looks different from the usual round-case suspects.
Wrist presence is a five out of five. The tonneau case, skeleton dial, and rubber strap combine to create a watch that is impossible to ignore. If you want a discreet watch, this is not it. If you want a watch that starts conversations and looks like a piece of contemporary design, the Impact delivers.
Reference Variants and Family
The Spirit of Big Bang family includes several references that share the same tonneau architecture. The titanium reference 641.NX.0173.LR is the closest baseline to the Impact treatment, with a skeleton dial and a black rubber strap. The King Gold reference 641.OX.0183.LR adds warmth and weight, while the black ceramic reference 641.CI.0173.RX offers a sharper, more scratch-resistant case. These are not identical to every Impact variant, but they show the range of the family.
Other family references include the larger 601.NX.0173.LR and the Meca-10 reference 647.NX.1137.RX. The Spirit of Big Bang has also been produced in tourbillon and limited-edition forms. For collectors, the key is to focus on the specific reference you are buying, because case material and dial treatment have a significant impact on resale value.
Comparisons
The most obvious comparison is the Audemars Piguet Royal Oak Offshore Chronograph. The Offshore has stronger collector credibility and a more established secondary market, but it also costs more. The Spirit of Big Bang Impact offers a similar oversized luxury sports chrono experience at a lower entry point, with a more aggressive design.
The Richard Mille RM 11-03 is the aspirational comparison. It has the tonneau case, the skeleton dial, and the rubber strap, but it operates in a completely different price bracket. The Impact is not a Richard Mille substitute, but it speaks the same visual language.
The Zenith Defy El Primero 21 is another high-beat skeleton chronograph with a futuristic case. It has stronger movement credibility and a more technical feel, but it lacks the Hublot's rubber-strap lifestyle appeal. The choice between them comes down to whether you want a watch that feels like a machine or a watch that feels like a fashion object.
Investment Value and Resale
The Hublot Spirit of Big Bang Impact is not an investment-grade watch. It depreciates from retail, and the secondary market is driven by dealers rather than auction records. Pre-owned examples typically trade at a meaningful discount to MSRP, and the best buying strategy is to let someone else take the first depreciation hit.
That does not mean the watch is a bad purchase. It means you should buy it for the experience, not for the financial return. If you buy pre-owned at the right price, you can enjoy the watch for years and exit without a catastrophic loss. If you buy at full retail, you should expect to lose money. The trend is depreciating, and there is no major auction history to suggest otherwise.
The hold recommendation is simple: buy pre-owned if you want the look, and do not treat the Impact as a store of value. Hublot's secondary market rewards patience and punishes full-retail entry.
Service and Ownership
Service should be handled by Hublot or an authorized watchmaker. The HUB4700 is a specialized movement, and not every independent will have access to parts. A full service is not inexpensive, and the cost should be factored into the purchase price if you are buying pre-owned. A watch with a recent service history is worth more than one with unknown history.
Ownership is otherwise straightforward. The rubber strap is durable, the sapphire crystal is scratch-resistant, and the watch is built for regular wear. The main cost is the service, which is part of the reality of owning a complex chronograph.
Final Verdict
The Hublot Spirit of Big Bang Impact is a successful design exercise and a genuinely fun watch to wear. It delivers tonneau-shaped drama, a high-beat skeleton chronograph, and a comfortable rubber strap. It is not an investment-grade collectible, and it is not for everyone. But for the right collector, it is a compelling alternative to the usual round-case luxury sports watches.
Buy it pre-owned, wear it hard, and enjoy the architecture. Just do not expect it to behave like a Royal Oak Offshore in the resale market. The Impact is a lifestyle purchase, and that is okay — as long as you know what you are buying.
