ZF Audemars Piguet Royal Oak Chronograph 26239OR Blue Dial
A technically proficient execution of the Calibre 4401 in a precisely dimensioned 41mm rose gold plated case.
Inside the Clone Calibre 4401
The introduction of the clone Calibre 4401 represents a significant paradigm shift for replica Royal Oak chronographs. By moving away from modular or heavily modified 7750 bases, this movement achieves the correct sub-dial spacing while supporting an instant date flip mechanism. The architecture features a functional column wheel for crisp pusher engagement, and the skeletonized rotor is meticulously finished to mirror the genuine component. Every movement undergoes rigorous testing to meet our strict QC standards before final assembly.
⏱ Accuracy Profile:
The ZF Calibre 4401 clone is typically regulated to operate within ±10–15 seconds per day, delivering reliable performance for a complex automatic chronograph mechanism.
- ✅ Power Reserve: Approximately 36 hours
- ✅ Complications: Hours, minutes, small seconds, date, and fully functional 12-hour chronograph
- ✅ Winding Direction: Unidirectional (counter-clockwise)
The Technical Breakdown
THE BUILD18K Rose Gold Plated 904L Steel
The case maintains a strict 41mm diameter and an impressive 12.0mm thickness, achieving the correct proportions of the genuine reference. The alternating brushed and polished finishing is executed with sharp transitions along the chamfers.
THE DIALBlue Grande Tapisserie
The dial features a highly accurate slate-blue sunburst effect over the intricately stamped Grande Tapisserie pattern. Rose gold applied hour-markers and Royal Oak hands are filled with luminescent coating for low-light legibility.
THE BEZELOctagonal Rose Gold Plated
The signature octagonal bezel is secured by eight hexagonal white gold-plated screws. The vertical brushing on the flat surface contrasts perfectly with the highly polished beveled edges.
THE BRACELETIntegrated AP Folding Clasp
The integrated bracelet features solid links with excellent endplay tolerances, ensuring a fluid drape over the wrist. The double-deployant clasp operates smoothly with minimal lateral play.
Why ZF for This Reference?
A question that comes up often: Why not APSF?
While APSF is renowned as a primary factory for Royal Oak integrated bracelets, this specific ZF release offers a highly compelling blue dial sunburst effect that many collectors feel captures the genuine slate-blue tone more accurately under direct lighting. Additionally, the ZF date wheel typography presents a slightly more refined font weight on this specific batch, aligning closely with the genuine 26239OR aesthetic.
One Caveat: The 18K rose gold plating, while visually accurate in its warm tone, requires careful wear to prevent scratching, and the clone 4401 rotor can exhibit minor bearing noise in quiet environments.
At a Glance
| MODEL REFERENCE |
26239OR.OO.1220OR.01 |
| FACTORY / VERSION |
ZF Edition |
| MOVEMENT |
1:1 Super Clone Calibre 4401 |
| CASE MATERIAL |
18K Rose Gold Plated 904L Steel |
| WEIGHT & THICKNESS |
166g | 12.0mm |
| CRYSTAL & LUME |
Sapphire with AR | Super-LumiNova |
| DIMENSIONS |
41.0mm × 51.5mm × 12.0mmManual measurements — minor tolerances apply. |
| WATER RESISTANCE |
50m Stated — a professional water-resistance check is recommended before submersion |
What Buyers Ask
Q: Does the ZF Calibre 4401 clone have a fully functional chronograph?
A: Yes, the clone Calibre 4401 features a fully functional chronograph with a working column wheel, allowing for accurate start, stop, and reset functions, along with correct sub-dial spacing at 3, 6, and 9 o’clock.
Q: How accurate is the 18K rose gold plating tone on this ZF 26239OR?
A: ZF has formulated their rose gold plating to closely mimic the warm, slightly copper hue of genuine Audemars Piguet 18K pink gold, avoiding the overly yellow or brassy tones often seen in lower-tier replicas.
Q: Are the sub-dials correctly spaced on this replica?
A: Yes. Because this model utilizes a bespoke 1:1 clone of the Calibre 4401 rather than a modified ETA 7750, the sub-dials are positioned exactly as they are on the genuine reference, eliminating the ‘sunken date’ or cramped dial layout issues of older versions.
Q: Is the rotor noise noticeable on the ZF Calibre 4401?
A: Like many complex clone chronographs, the skeletonized rotor on the ZF 4401 can produce a slight bearing noise when the wrist is moved rapidly in a quiet environment. This is a known quirk of the movement architecture and does not affect timekeeping performance.
Reviews
There are no reviews yet.