MS Factory Hublot Spirit of Big Bang 642.NX.0170.RX Technical Guide
The MS Factory Hublot Spirit of Big Bang 642.NX.0170.RX uses the distinctive tonneau-shaped case architecture associated with the Spirit of Big Bang collection.
The supplied configuration measures 45mm and combines titanium and resin components with six H-shaped exterior screws, a multi-part case construction, fluororubber strap and folding clasp.
Inside is a HUB4700-style automatic mechanical movement.
Another practical feature is the push-button quick-release strap system, allowing the compatible rubber strap to be removed without using a conventional spring-bar tool.
Rather than looking only at the unusual case shape, this model is worth examining as a combination of case construction, movement architecture, strap system and overall dimensions.
45mm Tonneau-Shaped Case
The supplied specification identifies this Spirit of Big Bang as a 45mm configuration.
Unlike a conventional round 45mm watch, however, the dimensions of a tonneau-shaped case need to be interpreted differently.
The case extends vertically and horizontally through its curved rectangular geometry, meaning width alone does not fully describe how large the watch will feel.
For an individual example, useful measurements include:
- Case width
- Overall case length
- Thickness
- Complete weight
These figures provide a better indication of actual wrist presence.
Titanium Case Construction
The supplied information identifies titanium as one of the primary materials used in the case.
Titanium is particularly relevant on a larger 45mm watch because its density is lower than stainless steel, potentially reducing overall mass depending on the complete construction.
The surface can be examined for the consistency of its brushed and polished areas, particularly around the bezel, case sides and edges.
Actual complete weight should still be measured because the movement, crystal, resin components, clasp and other parts all contribute to the final figure.
Titanium and Resin Combination
The Spirit of Big Bang design uses a combination of different materials rather than constructing the complete exterior from a single metal.
The supplied MS configuration references both titanium and resin components.
This material combination is part of the layered case architecture.
Rather than treating the different materials only as decorative elements, close-up photographs can show how they meet around the bezel, middle case, screws and strap attachment areas.
Multi-Part “Sandwich” Case Architecture
One of the more interesting structural characteristics is the multi-part or “sandwich” case construction.
Different case components are layered together and secured as part of the complete structure.
This creates visible transitions between the exterior materials and gives the Spirit of Big Bang a noticeably more technical appearance than a conventional one-piece case profile.
Useful areas to inspect include:
Bezel → H-Shaped Screws → Middle Case → Resin Components → Caseback
Viewing the case from the side is particularly useful because the layered construction is much easier to understand than from a straight front photograph.
Six H-Shaped Screws
Six H-shaped screws form another recognizable part of the exterior design.
Because these components are distributed around the case, their shape, recesses and finishing become noticeable under macro photography.
Useful inspection points include screw positioning, surface finishing and the consistency of the surrounding case openings.
On a design with multiple exposed mechanical-looking elements, these small components contribute significantly to the overall appearance.
HUB4700-Style Automatic Movement
The MS Factory 642.NX.0170.RX is supplied with a HUB4700-style automatic mechanical movement.
For database purposes, it is important to separate the movement’s visual configuration from claims about its origin.
A movement that reproduces the visual characteristics of a HUB4700 should not automatically be described as an original Hublot HUB4700 caliber.
For this reason, HUB4700-style automatic movement is the more accurate classification unless the underlying movement architecture has been independently established.
Movement Appearance
The movement forms an important part of the Spirit of Big Bang design because much of the watch has a technical, mechanically focused appearance.
Useful details to examine include:
- Automatic rotor
- Bridge layout
- Gear positioning
- Engraving
- Surface finishing
- Visible movement components
These visual characteristics should still be considered separately from actual movement performance.
Movement Performance
An individual movement can be evaluated using a timegrapher.
Useful measurements include:
Daily Rate → Amplitude → Beat Error → Beat Rate
Manual winding, automatic winding and time-setting operation can then be checked separately.
If the movement incorporates additional functional displays, each function should also be operated through its complete range rather than judged only from a static photograph.
Fluororubber Strap
The supplied configuration uses a fluororubber strap.
Rubber works particularly well with a large tonneau case because it can follow the wrist more closely than a rigid metal bracelet.
The strap should sit naturally against the case and bend without unusual stiffness.
Useful areas to examine include:
- Surface texture
- Edge finishing
- Flexibility
- Case connection
- Clasp connection
The correct strap size is particularly important on a 45mm watch because it helps keep the relatively large case centered on the wrist.
Push-Button Quick-Release Strap System
One of the practical features of this MS version is its push-button quick-release strap system.
Instead of removing conventional spring bars with a separate tool, the mechanism allows a compatible strap to be released by operating the integrated button.
This makes strap changes considerably easier.
However, releasing the strap is only half of the functional test.
After reinstalling it, the strap should be gently checked to make sure the locking mechanism has fully engaged.
For QC purposes, the useful test is therefore:
Release → Remove → Reinstall → Lock → Security Check
This confirms that the mechanism works through its complete operating cycle.
Folding Clasp
The rubber strap is paired with a folding clasp.
Opening and closing should feel consistent, and the clasp should lock securely once engaged.
Because the clasp is in frequent contact with the wrist, the interior edges and contact surfaces are also worth checking for finishing and comfort.
Why the Case Structure Matters
With the Spirit of Big Bang, the case is arguably just as important as the movement.
A conventional round watch can often be described reasonably well using diameter and thickness.
The 642.NX.0170.RX is different.
Its tonneau geometry, layered case, titanium components, resin sections, exposed H-shaped screws and integrated rubber strap all contribute to how the watch looks and feels.
This makes side-profile and angled photographs particularly useful when documenting an individual example.
Super Clone Watch and Actual QC Data
The term super clone watch may be used as a broad market description for higher-specification replica watches, but it does not define movement performance, material composition or manufacturing tolerances.
For the MS Factory Spirit of Big Bang, more useful information comes from measurable and observable characteristics: actual dimensions, complete weight, movement data, functional testing, case construction and strap-locking operation.
For actual measurements and movement testing from an individual example, see our MS Factory Hublot Spirit of Big Bang 642.NX.0170.RX QC test.
Details Worth Checking
For an individual MS Factory 642.NX.0170.RX, the first useful step is to measure the actual case width, length, thickness and complete weight.
The titanium and resin case components can then be inspected from the front, side and rear to document the layered construction.
The six H-shaped screws and surrounding case openings are useful areas for macro photographs.
The rubber strap should then be removed and reinstalled to test the complete quick-release cycle.
Finally, movement measurements such as daily rate, amplitude, beat error and beat rate can be recorded, together with tests of winding, time setting and any additional movement functions.
Technical Specifications
Specification Details
Factory MS Factory
Brand / Collection Hublot Spirit of Big Bang
Reference 642.NX.0170.RX
Case Size 45mm
Case Shape Tonneau
Primary Case Material Titanium
Additional Case Material Resin
Case Architecture Multi-Part / Sandwich-Style
Exterior Screws Six H-Shaped Screws
Movement HUB4700-Style Automatic
Strap Fluororubber
Strap System Push-Button Quick Release
Clasp Folding Clasp
Thickness Recommended to Measure Individually
Weight Recommended to Measure Individually
FAQ
- What size is the MS Factory Hublot Spirit of Big Bang 642.NX.0170.RX?
The supplied configuration is 45mm. Because it uses a tonneau-shaped case, overall length and thickness are also useful measurements when evaluating wrist fit.
- What materials are used for the case?
The supplied information identifies titanium and resin components within the multi-part case construction.
- What movement does the MS Factory version use?
It is supplied with a HUB4700-style automatic mechanical movement. This describes the movement configuration and appearance without claiming that it is an original Hublot caliber.
- Can the rubber strap be changed without conventional tools?
The supplied configuration includes a push-button quick-release mechanism designed to simplify removal and installation of compatible straps.
- What should be checked after changing the strap?
After reinstalling the strap, both attachment points should be checked to confirm that the locking mechanism has fully engaged before wearing the watch.
- What should be checked during QC?
Useful checks include actual width, length, thickness, weight, daily rate, amplitude, beat error, beat rate, movement functions, titanium/resin case finishing, H-shaped screws, rubber-strap fit, quick-release operation and folding-clasp security.
