MS Factory Hublot Spirit of Big Bang 642.NM.0170.RX Pre-Shipment QC Review

MS Factory Hublot Spirit of Big Bang 642.NM.0170.RX Pre-Shipment QC Review

The MS Factory Hublot Spirit of Big Bang 642.NM.0170.RX features a 45mm-class case, rubber strap and skeletonized dial, combined with a modified 7750-based mechanical movement.

This model has a relatively large and substantial case profile. The specific watch inspected during this pre-shipment QC measured 45.2mm in width, 16.2mm in thickness and 182.4g in weight.

During the timegrapher test, the movement recorded +14 seconds/day, 249° amplitude, 0.2ms beat error and 28,800 BPH.

QC Test Results

Inspection Item Measured Result
Factory MS Factory
Model Hublot Spirit of Big Bang 642.NM.0170.RX
Dial Skeletonized Dial
Strap Rubber Strap
Movement Modified 7750-Based Movement
Daily Rate +14 s/day
Amplitude 249°
Beat Error 0.2ms
Beat Rate 28,800 BPH
Measured Width 45.2mm
Measured Thickness 16.2mm
Measured Weight 182.4g

These measurements were taken from this specific watch during pre-shipment QC. Individual watches may show minor differences due to production tolerances, power reserve, testing position and measurement methods.

Modified 7750-Based Movement

This MS Factory Spirit of Big Bang uses a modified 7750-based movement.

This is an important technical detail when evaluating the watch. Rather than identifying the movement solely by the appearance visible through the skeletonized dial, its underlying 7750-based architecture should also be considered.

For a modified chronograph movement, QC should cover both the basic movement condition and the operation of the available functions.

This provides a more useful assessment than evaluating the movement only from static photographs.

Timegrapher Performance

The movement recorded:

Daily Rate: +14 seconds/day
Amplitude: 249°
Beat Error: 0.2ms
Beat Rate: 28,800 BPH

The +14 seconds/day reading falls within the commonly used ±0–15 seconds/day pre-shipment QC reference range, although it is relatively close to the upper end of that range.

The amplitude measured 249°, while the beat error was 0.2ms.

For this individual watch, these figures provide a useful record of the movement’s operating condition at the time of testing.

Actual daily accuracy can change depending on power reserve, temperature, resting position and wearing habits.

45.2mm Actual Width

Although this model is generally categorized as a 45mm Spirit of Big Bang, the actual measured width of this specific QC sample is 45.2mm.

This is a good example of why individual measurements can be useful when evaluating a specific watch.

Nominal model dimensions and actual QC measurements may differ slightly depending on production tolerances and the exact measuring position.

For this particular sample, 45.2mm is the actual recorded width.

16.2mm Measured Thickness

This watch measured 16.2mm in thickness.

The thickness is an important part of the Spirit of Big Bang’s overall proportions because this is not designed as a thin-profile watch.

Combined with the 45.2mm width, the 16.2mm thickness creates a substantial wrist presence.

For buyers comparing this model with other Hublot versions, case thickness can be just as important as width when considering overall wearing proportions.

182.4g Measured Weight

The actual measured weight of this specific watch is 182.4g.

Considering the rubber strap configuration, the 182.4g measurement indicates that much of the physical presence comes from the watch head and its overall construction.

Weight should not be used alone as a measure of quality. Case construction, movement, dimensions, strap, clasp and overall weight distribution all contribute to the actual wearing experience.

The 182.4g figure applies specifically to this QC sample.

Skeletonized Dial

The skeletonized dial is one of the defining visual characteristics of the Spirit of Big Bang 642.NM.0170.RX.

Unlike a conventional solid dial, the open-worked design exposes more of the internal mechanical structure and creates a more complex visual layout.

This also means QC should pay particular attention to the visible movement components, hands, hour markers, subdial elements and overall cleanliness.

Because more internal components remain visible, small marks or assembly issues can be easier to notice than on a conventional closed-dial watch.

Rubber Strap and Wearing Profile

This configuration uses a rubber strap, which suits the large and sporty proportions of the Spirit of Big Bang.

For pre-shipment inspection, the strap should be checked at its connection points to the case, while the clasp should be tested for normal opening, closing and secure locking.

The combination of a 45.2mm width, 16.2mm thickness and 182.4g measured weight gives this watch a substantial overall presence.

These physical measurements are useful references for buyers who prefer larger sports watches.

Chronograph Function Inspection

Because the watch uses a modified 7750-based movement, the chronograph function should be physically tested during QC.

The inspection should include the complete:

Start → Stop → Reset

sequence.

Attention should be given to whether the chronograph operates normally and whether the relevant hands return correctly after reset.

The pushers should operate normally without excessive resistance, and the crown and time-setting functions should also be checked.

For a mechanical chronograph, this functional test is an important complement to the timegrapher readings.

Overall QC Assessment

This MS Factory Hublot Spirit of Big Bang 642.NM.0170.RX recorded:

+14 seconds/day
249° amplitude
0.2ms beat error
28,800 BPH

Actual physical measurements were:

Width: 45.2mm
Thickness: 16.2mm
Weight: 182.4g
Movement: Modified 7750-Based Movement

The main characteristics of this version are its large case proportions, skeletonized dial, rubber strap and modified 7750 movement.

The +14 seconds/day rate is within the commonly used pre-shipment QC reference range, although it is near the upper end. Buyers who prefer a tighter daily rate can consider regulation and retesting before shipment.

For this type of watch, movement readings should be considered together with the actual chronograph operation, visible movement details, case dimensions, strap connection and overall exterior condition.

FAQ | MS Factory Hublot Spirit of Big Bang

What movement does this MS Factory Spirit of Big Bang use?
This specific version uses a modified 7750-based mechanical movement.

What were the timegrapher results?
The movement recorded +14 seconds/day, 249° amplitude, 0.2ms beat error and 28,800 BPH during this QC test.

What are the actual measured dimensions?
This specific watch measured 45.2mm in width and 16.2mm in thickness.

How much does this watch weigh?
The actual measured weight of this specific QC sample is 182.4g.

Does this version have a skeletonized dial?
Yes. The model features a skeletonized dial, making the internal mechanical structure and movement details more visible.

What should be checked during pre-shipment QC?
In addition to the timegrapher results, the chronograph start, stop and reset functions, visible movement components, hands, dial details, case condition, rubber strap, clasp and overall assembly should be inspected.