BLS Factory IWC Pilot Chronograph Top Gun IW388106 Pre-Shipment QC Review

BLS Factory IWC Pilot Chronograph Top Gun IW388106 Pre-Shipment QC Review

The BLS Factory IWC Pilot Chronograph Top Gun IW388106 is a 41mm black ceramic chronograph equipped with a Cal.69385 movement and sapphire crystal.

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

During the timegrapher test, the Cal.69385 movement recorded a +14 seconds/day daily rate, 274° amplitude, 0.4ms beat error and 28,800 BPH.

The specific watch measured 41mm in width, 15.6mm in thickness and 125.1g in weight.

QC Test Results

Inspection Item Measured Result
Factory BLS Factory
Model IWC Pilot Chronograph Top Gun IW388106
Case Black Ceramic
Movement Cal.69385
Daily Rate +14 s/day
Amplitude 274°
Beat Error 0.4ms
Beat Rate 28,800 BPH
Crystal Sapphire Crystal
Width 41mm
Thickness 15.6mm
Weight 125.1g

These measurements were recorded from this specific watch during the pre-shipment QC inspection. Minor variations may occur between individual watches due to production tolerances, power reserve, testing position and measurement methods.

Cal.69385 Movement Performance

This BLS Factory IWC Pilot Chronograph Top Gun IW388106 is equipped with a Cal.69385 movement.

The timegrapher recorded:

Daily Rate: +14 seconds/day
Amplitude: 274°
Beat Error: 0.4ms
Beat Rate: 28,800 BPH

The 274° amplitude indicates a healthy operating state during this particular test. The beat error measured 0.4ms, while the daily rate was recorded at +14 seconds per day.

The +14-second reading is close to the upper end of the commonly used 0 to +15 seconds/day QC reference range. It remains within that reference, although buyers who prefer tighter accuracy may request further regulation and retesting before shipment.

These readings represent the condition of this specific movement at the time of testing. Actual daily accuracy can vary depending on power reserve, temperature, resting position and wearing habits.

Black Ceramic Case

One of the defining features of the IW388106 Top Gun is its black ceramic case.

Ceramic gives the watch a distinctive matte appearance while also creating a different wrist feel compared with a conventional stainless-steel chronograph.

During QC, the ceramic case should be inspected carefully for surface condition, edges and consistency around the case components.

The black case, dial and overall Pilot Chronograph design give this version a strong monochromatic appearance.

41mm Width and 15.6mm Thickness

This specific watch measured 41mm in width and 15.6mm in thickness.

Although the 41mm width is relatively moderate for a modern sports chronograph, the 15.6mm thickness creates a noticeably substantial side profile.

For this reason, buyers considering this model should pay attention to thickness as well as case width.

The actual 41mm × 15.6mm measurements provide a useful reference for understanding the physical proportions of this specific QC sample.

125.1g Measured Weight

The measured weight of this specific BLS Factory IW388106 is 125.1g.

Considering the 41mm width and 15.6mm thickness, the ceramic case helps keep the overall weight relatively controlled.

Weight should still be considered together with case construction, strap configuration and overall weight distribution rather than being used alone to judge quality.

Minor variations may occur between individual watches due to production tolerances and configuration.

Sapphire Crystal and Exterior QC

This version is fitted with a sapphire crystal.

For exterior QC, important areas include the dial, hands, hour markers, subdials, date display, chronograph pushers, crown, ceramic case surfaces and strap connection.

Because the IW388106 combines a chronograph layout with a black ceramic case, alignment and surface finishing are especially noticeable during close inspection.

Actual QC photos and functional testing provide a more useful reference for the specific watch than static specifications alone.

Chronograph Function QC

As a Pilot Chronograph model, the chronograph mechanism is an important part of the overall QC process.

Before shipment, the chronograph should be tested through start, stop and reset operations, with attention paid to the movement of the chronograph hands and their return position after reset.

The crown, time-setting and other available functions should also be checked as part of the same inspection.

For a mechanical chronograph, movement readings alone do not provide a complete picture. Combining timegrapher testing with actual functional operation gives a more complete assessment of the individual watch.

Overall QC Assessment

Based on this pre-shipment inspection, the BLS Factory IWC Pilot Chronograph Top Gun IW388106 produced solid overall movement readings.

The Cal.69385 movement recorded:

+14 seconds/day
274° amplitude
0.4ms beat error
28,800 BPH

The watch measured:

Width: 41mm
Thickness: 15.6mm
Weight: 125.1g
Case: Black Ceramic
Crystal: Sapphire

The combination of the black ceramic case, 41mm proportions and chronograph layout gives this model a distinctive character compared with conventional stainless-steel Pilot watches.

For pre-shipment QC, particular attention should be given to the chronograph operation, ceramic case condition and movement performance. Based on the supplied measurements, this specific sample was operating within the usual QC reference range at the time of testing.

FAQ | BLS Factory IWC Pilot Chronograph Top Gun IW388106

What movement does this BLS Factory IW388106 use?
This specific QC sample is equipped with a Cal.69385 movement running at 28,800 BPH.

What were the timegrapher results?
The movement recorded +14 seconds/day, 274° amplitude, 0.4ms beat error and 28,800 BPH.

What material is the case?
This version uses a black ceramic case and is fitted with a sapphire crystal.

What are the actual dimensions?
This specific watch measured 41mm in width and 15.6mm in thickness.

How much does the watch weigh?
The measured weight of this specific QC sample is 125.1g.

What should be checked before shipping a mechanical chronograph?
In addition to timegrapher performance, the chronograph start, stop and reset operations should be tested. The hands, reset position, crown, pushers, ceramic case and overall exterior condition should also be inspected.