P1 Factory Patek Philippe Aquanaut 5968A Pre-Shipment QC Review

P1 Factory Patek Philippe Aquanaut 5968A Pre-Shipment QC Review

The P1 Factory Patek Philippe Aquanaut 5968A is one of the more refined Aquanaut chronograph versions currently available on the market. This pre-shipment QC inspection records the custom CH28-520C automatic movement performance, case dimensions, weight and chronograph functionality of this specific watch.

During the timegrapher test, the movement recorded a daily rate of +3 seconds per day, an amplitude of 276°, a beat error of 0.1ms, and a beat frequency of 28,800 BPH. Based on these readings, the movement was operating steadily at the time of inspection.

One important point is that the chronograph function is fully operational and is not merely decorative.

QC Test Results

Inspection Item Measured Result
Factory P1 Factory
Model Patek Philippe Aquanaut 5968A
Movement Custom CH28-520C Automatic Movement
Daily Rate +3 s/day
Amplitude 276°
Beat Error 0.1ms
Beat Rate 28,800 BPH
Case Width 43mm
Case Thickness 13.1mm
Measured Weight 137g
Chronograph Function Fully Functional

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

Custom CH28-520C Movement Performance

This tested watch is equipped with a custom CH28-520C automatic movement.

The timegrapher recorded a daily rate of +3 seconds per day, an amplitude of 276°, a beat error of 0.1ms, and a beat frequency of 28,800 BPH.

A +3 second daily rate means the watch was running approximately three seconds fast per day under the tested conditions. The 0.1ms beat error was also well controlled.

Overall, the movement showed stable performance during this QC inspection.

Actual daily accuracy may vary depending on power reserve, wearing habits, temperature and the position in which the watch is left when not being worn.

Chronograph Function Testing

The chronograph is an important part of the Aquanaut 5968A, so the QC process included actual chronograph operation in addition to basic timekeeping checks.

This inspection confirmed that the chronograph function is fully operational and is not decorative.

For a chronograph watch, this is an important reference point. A version should not be judged only by the appearance of the dial, subdial and pushers; the start, stop and related chronograph operations should also be checked.

Dimensions and Measurement Differences

The measured case width of this specific watch is 43mm, the thickness is 13.1mm, and the total measured weight is 137g.

One point worth noting is that these actual measurements differ slightly from some advertised market specifications.

The difference is not significant and may be affected by the exact measuring position, caliper placement and production tolerances between individual watches. For this reason, actual measurements from a specific watch are more useful than relying only on advertised specifications.

The 43mm width combined with the 13.1mm thickness gives the watch a clear sports-chronograph profile, while the 137g measured weight provides a useful real-world reference for wrist feel.

Exterior Details and Overall Finishing

The P1 Factory Patek Philippe Aquanaut 5968A shows a high level of overall detail.

During QC, attention should be given not only to the movement and chronograph function, but also to the dial layout, chronograph subdial, hands, hour markers, case edges, pusher operation and overall assembly.

Based on the combined performance of the case proportions, exterior details, chronograph functionality and movement, this version reaches a strong overall level of completion.

Overall QC Assessment

Based on this pre-shipment QC inspection, the P1 Factory Patek Philippe Aquanaut 5968A performed well overall.

The custom CH28-520C automatic movement recorded a daily rate of +3 seconds per day, an amplitude of 276°, a beat error of 0.1ms, and a beat frequency of 28,800 BPH. The chronograph function is also fully operational rather than decorative.

The measured dimensions are 43mm in width, 13.1mm in thickness and 137g in total weight. Although these actual measurements differ slightly from some market advertising, the difference is small, and real measurements provide a more useful basis for comparing different versions.

Considering the movement, chronograph functionality, case proportions and overall detailing, this P1 Factory 5968A can be regarded as one of the stronger versions currently available on the market.

FAQ | P1 Factory Patek Philippe Aquanaut 5968A

What movement does this watch use?
This tested watch is equipped with a custom CH28-520C automatic movement.

What were the movement test results?
The measured results were +3 seconds per day, 276° amplitude, 0.1ms beat error, and 28,800 BPH.

Is the chronograph actually functional?
Yes. The chronograph was tested and is fully functional rather than decorative.

What are the actual dimensions?
This specific watch measured 43mm in width and 13.1mm in thickness.

Why are the measured dimensions slightly different from some advertised specifications?
Small differences may result from measuring position, caliper placement and production tolerances. For comparison purposes, the actual measurements of the specific watch are more useful than advertised figures alone.

How much does the watch weigh?
This specific watch measured 137g. Minor variations may occur between individual watches.