APSF Edition — Rubber Strap
The APSF iteration of the Royal Oak Offshore 26420OI represents a significant technical milestone in AP replication, primarily due to the integration of the true clone Calibre 4401. This eliminates the date-wheel depth issues and incorrect subdial spacing that plagued earlier modular 7750-based releases, aligning the visual geometry perfectly with the genuine reference.
Powered by the APSF clone Calibre 4401, this selfwinding chronograph features a fully integrated architecture rather than a piggyback module. The movement mirrors the genuine with correct bridge layouts, a skeletonized rotor, and accurate subdial functions at 3, 6, and 9 o’clock. Power reserve is approximately 36 hours.
The 43mm case is constructed from stainless steel with a heavy rose gold plating, showcasing AP’s signature brushed/polished alternating finishing. The gray dial features the precise vertical and horizontal ‘Méga Tapisserie’ checkered surface, complemented by rose gold-toned subdials and applied hour markers that catch the light with exacting precision.
- Movement: Clone Calibre 4401 — Approximately 36 hours
- Case Material: Rose gold plated stainless steel, 43mm diameter, 14.4mm thickness
- Bezel: Rose gold plated steel, brushed with polished chamfers
- Crystal: Scratch-resistant sapphire with colorless AR coating
- Bracelet: Gray rubber strap with quick-release system and pin buckle
- Water Resistance: 30m — 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 is suited for collectors who require the robust presence of an Offshore but demand the horological accuracy of an integrated movement. Its 43mm profile demands a larger wrist, serving well in casual or sporting environments.


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