TK Factory Audemars Piguet Royal Oak Offshore Chronograph 26470ST.OO.A101CR.01 – Cal.3126 QC Review

TK Factory Audemars Piguet Royal Oak Offshore Chronograph 26470ST.OO.A101CR.01 – Cal.3126 QC Review

This QC inspection covers the TK Factory Audemars Piguet Royal Oak Offshore Chronograph 26470ST.OO.A101CR.01, featuring a stainless steel case, black dial with Arabic numeral hour markers, sapphire crystal and a movement designated Cal.3126.

The model is listed as a 44mm Royal Oak Offshore Chronograph, while the tested sample measured 43mm across the case.

The most important finding from this inspection is that all reported chronograph and timekeeping functions are operational, including the hour counter at 6 o’clock, minute counter at 9 o’clock and seconds display at 12 o’clock.

For a mechanically complicated chronograph, documenting these functions provides more useful information than relying on exterior photographs alone.

Actual QC Data

QC Item Actual Test Result
Factory TK Factory
Reference 26470ST.OO.A101CR.01
Collection Royal Oak Offshore Chronograph
Case Material Stainless Steel
Dial Black, Arabic Numerals
Crystal Sapphire
Movement Cal.3126-designated
Daily Rate +4 s/day
Amplitude 212°
Beat Error 0.0ms
Beat Rate 28,800 BPH
Nominal Case Size 44mm
Measured Width 43mm
Measured Thickness 15.7mm
Measured Weight 259.4g
Functional Test All reported functions operational

These measurements apply to the individual watch tested. Results may vary with production tolerances, movement condition, power reserve and measurement methods.

Cal.3126 Movement and Timegrapher Test

This sample uses a movement designated Cal.3126, operating at 28,800 BPH.

The timegrapher recorded a daily rate of +4 seconds/day, amplitude of 212° and beat error of 0.0ms.

The daily-rate result falls within our commonly used ±0–15 seconds/day pre-shipment QC reference range.

However, the amplitude reading deserves separate attention.

At 212°, the measured amplitude is relatively modest compared with the readings often seen in healthy, fully wound automatic movements. It should not automatically be classified as a movement defect, because amplitude can be affected by power reserve, lift-angle settings, testing position and movement architecture.

For a more complete assessment, it would be useful to repeat the test after adequate winding and confirm that the amplitude remains stable across relevant positions.

This distinction matters because a favorable daily-rate reading alone does not establish overall movement condition.

What We Found: Functional Chronograph Counters

The main technical finding from this TK Factory 26470ST sample is its functional chronograph layout.

All reported functions were tested and found to be operational.

6 O’Clock — Chronograph Hour Counter

This subdial records accumulated hours during chronograph operation. It is a functional elapsed-hour counter rather than a decorative display.

9 O’Clock — Chronograph Minute Counter

This subdial records accumulated minutes while the chronograph is running.

12 O’Clock — Seconds Display

This position provides a working seconds indication. The supplied QC results identify it as functional, without specifying whether it is the running-seconds or elapsed-seconds display.

Why Functional Verification Matters

Chronograph watches can have similar external layouts while using different internal movement configurations.

A subdial that looks correct in photographs is not necessarily mechanically functional.

For this sample, the hour and minute counters were confirmed as working functions, making this a meaningful distinction when comparing Royal Oak Offshore Chronograph versions.

A complete chronograph inspection should also verify start, stop, reset and the correct advancement of the counters over time.

Case Dimensions and Weight

This sample measured 43mm in width, 15.7mm in thickness and 259.4g in weight.

The measured width differs from the model’s nominal 44mm specification. This does not necessarily indicate a manufacturing issue because measurement points and methods may differ.

The recorded weight is particularly noteworthy.

At 259.4g, this is a substantial watch. However, weight alone does not establish better construction quality or closer correspondence to another version.

A proper comparison should also consider case finishing, bracelet or strap configuration, clasp construction, movement architecture and weight distribution.

The recorded weight is therefore most useful as a reference for comparing similarly configured samples under consistent measurement conditions.

Overall QC Assessment

This TK Factory Royal Oak Offshore Chronograph 26470ST sample demonstrates working chronograph hour and minute counters, along with a favorable daily-rate reading.

The main positive finding is the functional implementation of the complications rather than their appearance alone.

The measured weight also provides a useful physical reference for future comparisons.

One point worth monitoring is the 212° amplitude reading. Although the daily rate and beat error were favorable during this test, an additional timegrapher measurement after adequate winding would provide a stronger basis for evaluating movement condition.

Overall, the sample offers useful technical data on its chronograph functionality, movement performance and physical construction. Long-term reliability cannot be established from a single QC inspection.

FAQ

What movement does the TK Factory 26470ST use?

The tested sample uses a movement designated Cal.3126, operating at 28,800 BPH. The designation alone does not confirm that its internal architecture is identical to the original movement.

Are the chronograph hour and minute counters functional?

Yes. The 6 o’clock subdial functions as an elapsed-hour counter, while the 9 o’clock subdial records elapsed minutes.

Is the 212° amplitude reading acceptable?

It is a relatively modest reading that should be evaluated alongside winding state, test position, lift-angle settings and other movement measurements. A repeat test after adequate winding would be useful.

What are the actual dimensions and weight?

This QC sample measured 43mm in width, 15.7mm in thickness and 259.4g in weight.