Hublot Spirit of Big Bang Titanium 642.NX.7170.RX
Original price was: $1,349.00.$849.00Current price is: $849.00.
This is the Spirit of Big Bang to choose if you want the titanium case architecture to stay sharp and the blue skeleton display to look properly layered on the wrist. The 42mm tonneau case, skeletonized date ring, and blue structured rubber strap are the details that make this reference work. Against simpler steel-based alternatives, this one stands out for its Grade 5 titanium build and more convincing openworked layout. The detailed description matters here because this watch is all about visible construction and chronograph execution.
The blue skeleton dial is what makes this reference
At a glance, the appeal is obvious: a deep blue openworked display framed by a satin-finished titanium tonneau case, with bright applied markers and broad hands standing out clearly over the movement. That contrast is what makes the 642.NX.7170.RX easy to enjoy in daily wear. Skeleton watches can sometimes look busy or lose legibility, but this one keeps the display organized with a distinct minute track, three recessed chronograph registers, and a skeletonized date ring that adds detail without cluttering the dial.
If you are choosing among modern Hublot chronographs, this is one of the references where color and construction genuinely work together. The blue dial structure carries through to the blue lined rubber strap, so the watch feels cohesive rather than experimental. It still has the hard-edged industrial look the Spirit of Big Bang line is known for, but the blue tones make it more versatile and less severe than an all-black version.
The chronograph layout stays true to the spirit of the watch
Inside is an exclusive HUB4700 automatic chronograph clone with a skeletonized date ring and approximately 42 hours of power reserve. Functions include hours, minutes, running seconds, full chronograph operation, and date. For this model, the important point is not just that it is automatic, but that the movement supports the openworked dial layout in a way that preserves the look that draws people to the watch in the first place.
That is why knowledgeable buyers tend to focus on this execution rather than treating all versions as interchangeable. On a closed-dial sports watch, compromises are easier to hide. On a Spirit of Big Bang, the dial is doing the selling every time you look at it. Here, the exposed gearing, the cutout date display, and the placement of the subdials work together to keep the watch visually convincing from normal viewing distance as well as up close.
The strap and clasp suit the case properly
The blue structured lined rubber strap is exactly the right match for this case. It keeps the profile sporty and modern, and the vertical ribbing echoes the technical styling of the watch head. The fitted integration at the lugs is important too, because a watch with this much case shape can look unfinished if the strap junction is weak. Here it sits as it should, continuing the line of the tonneau case instead of breaking it.
The case also uses the One-Click quick-release strap system, which is a practical advantage if you like rotating straps. The clasp is a deployant style, and the visible hardware matches the overall industrial tone of the watch. That combination gives you the look most buyers looking for from the Spirit of Big Bang: assertive case design, secure rubber strap wear, and enough detail at the wrist to justify the openworked dial.
Who this watch suits best
This reference makes the most sense for someone who already understands why the Spirit of Big Bang is different from a standard luxury sports chronograph. You are not buying it for understatement. You are buying it because the layered titanium case, blue skeleton dial, visible date ring, and integrated rubber strap create a very specific wrist presence that few watches deliver. If you want the Spirit of Big Bang experience in a size and colorway that stays technical, legible, and visually balanced, this is the one to focus on.
Water resistance is suitable for basic daily exposure such as splash or rain, which is the sensible expectation for a multi-part chronograph case like this.
Watch specification
Configuration summary for this watch
| Brand | Hublot |
|---|---|
| Movement | Exclusive HUB4700 automatic chronograph clone |
| Case Material | Grade 5 titanium |
| Bezel | Satin-finished titanium bezel with H-shaped screws |
| Crystal | Scratch-resistant sapphire crystal with colorless anti-reflective coating |
| Bracelet | Blue structured lined rubber strap with One-Click quick-release system and deployant clasp |
| Water Resistance | Sealed for basic daily use (splash/rain proof) |
Buyer Q&A
Questions about this Hublot watch
What stands out most visually on this reference?
The blue skeleton dial, the exposed date ring, and the satin-finished titanium tonneau case define the look. The applied markers and broad hands keep the dial readable despite the openworked display.
What functions does the movement provide?
This watch has hours, minutes, running seconds, full chronograph functions, and a skeletonized date display, powered by an automatic HUB4700 clone movement with about 42 hours of power reserve when fully wound.
Does this watch use Hublot's quick-release strap system?
Yes. The case is built with the One-Click quick-release strap system, and it comes fitted on a blue structured rubber strap.
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