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Description
APSF Audemars Piguet Royal Oak Offshore Diver 15720ST
The APSF iteration stands as the technical benchmark for the 15720 reference due to its fully integrated Caliber 4308 and functional quick-release strap system.
At the Core �� Clone Caliber 4308
The custom Caliber 4308 represents a significant departure from standard decorated movements. APSF has developed this integrated mechanism to support an instantaneous date jump, utilizing functional gearing rather than superficial decorative plates. The bridges feature sharp CNC engraving that closely mimics the genuine article��s three-dimensional depth. Every movement undergoes to ensure the date wheel alignment and amplitude remain within acceptable tolerances.
This integrated clone caliber is typically regulated to perform within 卤10��15 seconds per day, depending on resting position and mainspring tension.
- �� Power Reserve: Approximately 36 hours
- �� Complications: Instantaneous date display, inner rotating dive scale via 10 o��clock crown
- �� Winding Direction: Bidirectional rotor winding
Technical Specifications
The 42mm case maintains a 14.2mm thickness, accurately replicating the genuine profile. The brushed/polished alternating finishing on the angular case edges demonstrates excellent factory tooling.
The dial exhibits deep, well-defined squares characteristic of the M茅ga Tapisserie pattern. Applied markers are filled with a consistent luminous compound for low-light visibility.
Features a fixed octagonal brushed steel outer bezel and an internal rotating dive scale. The inner scale aligns precisely with the dial indices.
The blue rubber strap utilizes a fully functional one-button quick-release mechanism, allowing for seamless strap changes with tolerances that rival the genuine system.
APSF vs. the Alternatives
One recurring question: ��Why not ZF Factory?��
While ZF produces excellent Royal Oak Offshore models, the APSF Edition is the preferred choice for the 15720 reference due to its integrated Caliber 4308. ZF historically relies on decorated base movements that add unnecessary thickness or lack the instantaneous date function. Furthermore, APSF��s execution of the quick-release strap mechanism offers superior tactile feedback and interchangeability.
Full Disclosure: The 10 o��clock crown that operates the inner rotating bezel on the APSF model has slightly less rotational resistance than the genuine piece, resulting in a lighter tactile feel.
Reference Data
| MODEL REFERENCE | 15720ST.OO.A027CA.01 |
| FACTORY / VERSION | APSF Edition |
| MOVEMENT | Clone Caliber 4308 |
| CASE MATERIAL | 316L Stainless Steel |
| WEIGHT & THICKNESS | 170 g | 14.2mm |
| CRYSTAL & LUME | Sapphire with AR | Standard Green Luminous Compound |
| DIMENSIONS | 42.0mm � 54.0mm � 14.2mmDimensions are taken manually and may vary slightly. |
| WATER RESISTANCE | Stated 50m �� we advise a professional pressure test before any water exposure |
Related References
Questions from Collectors
Q: How does the quick-release strap system on the APSF 15720 compare to the genuine mechanism?
A: APSF has successfully reverse-engineered the proprietary one-click system. It allows the rubber straps to be swapped seamlessly without tools, and the lug tolerances are precise enough to be compatible with genuine Audemars Piguet rubber straps.
Q: Is the Caliber 4308 in this model a decorated base movement or a true clone?
A: The APSF Caliber 4308 is a custom-integrated clone movement. Unlike older versions that used decorative plates over a Miyota base, this movement features a functional instantaneous date jump and real, movable gears visible through the caseback.
Q: Does the inner rotating dive bezel align correctly with the dial markers?
A: Yes, the internal dive scale aligns cleanly with the dial indices. It is operated via the screw-down crown at 10 o��clock, which functions identically to the genuine piece.
Q: Are there any known tactile differences with the 10 o��clock bezel crown?
A: While fully functional, the 10 o��clock crown mechanism on the APSF model exhibits slightly less rotational resistance than the genuine article. It turns smoothly, but lacks the heavier, damped tactile feedback found on the authentic watch.