BLS Factory Breitling Chronomat B01 44 PB0136251C1S1 Ice Blue QC Review

BLS Factory Breitling Chronomat B01 44 PB0136251C1S1 Ice Blue QC Review

The BLS Factory Breitling Chronomat B01 44 PB0136251C1S1 features a 44mm case with an ice-blue dial, sapphire crystal and a 7750-based movement modified to resemble the B01 configuration.

This pre-shipment QC inspection records the actual movement readings, case dimensions and weight of this specific watch.

During the timegrapher test, the movement recorded +1 second/day, 287° amplitude, 0.3ms beat error and 28,800 BPH.

Actual measurements were 44mm in width, 16.1mm in thickness and 155.6g in weight.

QC Test Results

Inspection Item Measured Result
Factory BLS Factory
Model Breitling Chronomat B01 44
Reference PB0136251C1S1
Dial Ice Blue
Movement Modified 7750 / B01 Style
Daily Rate +1 s/day
Amplitude 287°
Beat Error 0.3ms
Beat Rate 28,800 BPH
Crystal Sapphire Crystal
Width 44mm
Thickness 16.1mm
Weight 155.6g

These figures represent the actual measurements of this specific QC sample. Minor variations may occur between individual watches due to production tolerances, power reserve, testing position and measurement methods.

Modified 7750 / B01-Style Movement

This BLS Factory Chronomat B01 44 uses a 7750-based movement modified to resemble the B01 configuration.

This distinction is important when evaluating the watch. The movement should not be confused with a native or integrated B01 architecture simply because of its external appearance.

For buyers comparing different Chronomat versions, the internal movement construction is therefore worth confirming in addition to the dial, case and exterior details.

The 7750 platform is also a chronograph movement, so QC should include both timegrapher testing and actual chronograph operation.

Timegrapher Performance

The movement recorded:

Daily Rate: +1 second/day
Amplitude: 287°
Beat Error: 0.3ms
Beat Rate: 28,800 BPH

The +1-second daily rate represents a very small deviation under this particular test condition.

An amplitude of 287° indicates a healthy operating state during testing, while the 0.3ms beat error was also within a reasonable range.

These figures reflect the movement’s condition at the time of inspection. Actual daily accuracy can vary depending on power reserve, temperature, resting position and wearing habits.

44mm Width and 16.1mm Thickness

This specific Chronomat measured:

Width: 44mm
Thickness: 16.1mm

The 44mm width gives the watch a substantial wrist presence, while the 16.1mm thickness is particularly important when evaluating its overall profile.

For buyers accustomed to thinner watches, the thickness should be considered carefully because it has a significant influence on how the watch sits on the wrist.

Actual dimensions may show small differences between individual examples due to production tolerances and measuring positions.

155.6g Measured Weight

The measured weight of this specific QC sample is 155.6g.

Combined with the 44mm width and 16.1mm thickness, this gives the watch a substantial physical presence.

However, total weight should not be used alone to judge quality. Case finishing, dial execution, movement condition, chronograph operation and overall assembly are equally important.

The 155.6g measurement applies specifically to this individual QC sample.

Ice Blue Dial

The ice-blue dial is one of the most distinctive visual elements of this PB0136251C1S1 configuration.

Because lighter metallic dial colors can change noticeably under different lighting, QC photos taken from several angles are useful for evaluating the actual appearance.

Inspection should focus on the dial printing, hour markers, hands, subdial alignment and date display, together with the relationship between these components.

The ice-blue dial should therefore be evaluated under natural and brighter lighting rather than relying on a single photograph.

Sapphire Crystal and Exterior QC

This version is fitted with a sapphire crystal.

Exterior QC should cover the crystal condition, bezel, case surfaces, crown, chronograph pushers, dial, hands, hour markers, subdials and strap or bracelet connection.

For a 44mm chronograph with a relatively complex dial layout, alignment of the dial components and chronograph hands is particularly important.

These visual checks should be performed together with movement and functional testing before shipment.

Chronograph Function Inspection

As a mechanical chronograph, the actual chronograph function is an important part of QC.

The watch should be tested through the complete:

Start → Stop → Reset

sequence.

The chronograph hands should operate normally during the test, and their reset positions should be inspected carefully.

Because this model uses a 7750-based modified movement, correct operating procedures are also important. The chronograph pushers should be operated normally without excessive force, and unnecessary repeated operation should be avoided.

Important Movement Note

The movement configuration tested in this article is:

7750-based movement → modified to B01-style appearance

This is an important technical distinction.

Buyers comparing this model with other factory versions should confirm the actual movement construction rather than assuming that every watch advertised as a Chronomat B01 uses the same internal architecture.

Movement structure, exterior finishing, dimensions and actual QC results should be evaluated separately.

Overall QC Assessment

Based on this pre-shipment inspection, this BLS Factory Breitling Chronomat B01 44 PB0136251C1S1 produced solid movement readings.

The modified 7750/B01-style movement recorded:

+1 second/day
287° amplitude
0.3ms beat error
28,800 BPH

The watch measured:

Width: 44mm
Thickness: 16.1mm
Weight: 155.6g
Crystal: Sapphire

The +1-second daily rate and 287° amplitude were good results under the conditions of this test.

The main characteristics buyers should pay attention to are the 44mm case size, 16.1mm thickness, ice-blue dial and modified 7750/B01-style movement.

For this type of chronograph, movement readings alone are not enough. Chronograph operation, reset position, dial alignment and exterior finishing should all be included in the final pre-shipment inspection.

FAQ | BLS Factory Breitling Chronomat B01 44

What movement does this BLS Factory Chronomat B01 use?
This specific QC sample uses a 7750-based movement modified to resemble the B01 configuration.

What were the timegrapher results?
The movement recorded +1 second/day, 287° amplitude, 0.3ms beat error and 28,800 BPH during testing.

What are the actual dimensions?
This specific watch measured 44mm in width and 16.1mm in thickness.

How much does this Chronomat B01 44 weigh?
The measured weight of this specific QC sample is 155.6g.

Does this version use sapphire crystal?
Yes. The tested watch is fitted with a sapphire crystal.

What should be checked before shipping this chronograph?
In addition to timegrapher performance, QC should include the chronograph start, stop and reset functions, hand reset positions, dial and subdial alignment, crown, pushers, case condition and overall exterior finishing.