APSF Edition — Integrated Ceramic Bracelet
The APSF edition of the Royal Oak Perpetual Calendar 26579CE represents a significant technical achievement in ceramic case manufacturing. While previous iterations from other makers struggled with the density and finishing of zirconium oxide, APSF has successfully replicated the correct alternating brushed and polished finishing on the integrated bracelet and octagonal bezel. This reference stands as a benchmark for high-complication replicas.
At the core of this reference is the clone AP Caliber 5134 automatic movement. Unlike earlier modified movements that relied on faux indicators or 24-hour dials, this architecture supports a true moon phase complication at 6 o’clock alongside functional calendar subdials. The power reserve is approximately 36 hours. The movement is visible through the sapphire caseback, displaying a custom-decorated rotor.
The 41mm case maintains an 11.2mm thickness, closely mirroring the genuine profile. The black ceramic Grande Tapisserie dial exhibits accurate depth in its guilloche pattern, complemented by applied hour markers with correct luminous fill. The integrated bracelet fit ensures seamless articulation across the wrist.
- Movement: Clone AP Caliber 5134 — Approximately 36 hours
- Case Material: Black Ceramic, 41mm diameter, 11.2mm thickness
- Bezel: Black Ceramic with brushed top and polished chamfers
- Crystal: Scratch-resistant Sapphire with colorless AR coating
- Bracelet: Integrated Black Ceramic with titanium double deployant clasp
- Water Resistance: 30m stated — have the case pressure-tested by a professional prior to swimming. Do not operate chronograph pushers or the crown while the watch is submerged.
This piece suits the advanced collector seeking a high-complication ceramic sports watch. Its stealth aesthetic and complex dial layout demand a specific appreciation for horological density.

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