APSF Edition — Integrated Rubber / Metal Options
The APS Factory (APSF) release of the Royal Oak Offshore 26420 establishes a rigid benchmark for modern chronograph replication, stepping away from historically compromised modular architectures. By engineering a custom movement that accommodates the exact 16.4mm case thickness and 182.1g mass of the genuine article, APSF resolves the sunken date-wheel depth and pusher-alignment issues that plagued earlier iterations from competing factories. This specific reference is highly scrutinized on enthusiast forums for its complex case geometry, which APSF executes with precise alternating brushed and polished surfaces.
At the core of this model is the integrated Super Clone Calibre 4401, a significant horological achievement within the replica sector. Unlike traditional modified Asian 7750 movements that rely on fragile piggyback modules, this caliber features a native architecture supporting a true flyback chronograph function, allowing the user to reset the timing sequence without halting the mechanism. The movement operates at a stable 28,800 VPH and delivers a power reserve of approximately 36 hours, while the sapphire caseback reveals a 22K-style skeletonized rotor and bridges adorned with meticulous Côtes de Genève finishing.
The 42mm 316L stainless steel case houses a highly accurate deep blue Méga Tapisserie dial, characterized by crisp stamping and precise subdial spacing. The octagonal bezel is secured with signature hexagonal screws, displaying correct alignment and depth, while the anti-reflective sapphire crystal ensures optimal legibility under harsh lighting. The integrated strap system maintains strict tolerances at the lug junctions, preventing the excessive endplay common in lesser replicas.
- Movement: Super Clone Calibre 4401 — Approximately 36 hours
- Case Material: 316L Stainless Steel, 42mm diameter, 182.1g total weight
- Bezel: 316L Stainless Steel with alternating brushed and polished bevels
- Crystal: Sapphire crystal with colorless anti-reflective coating
- Bracelet: Integrated rubber or steel option with deployant clasp
- Water Resistance: 50m stated rating — professional pressure test recommended before swimming
This piece is engineered for collectors who require mechanical authenticity alongside visual fidelity. Its substantial wrist presence and operational flyback complication make it a compelling alternative for daily wear in robust environments.


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