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Description
ZF Audemars Piguet Royal Oak 15451ST 37mm Black Dial
A meticulously proportioned 37mm clone featuring a fully integrated movement architecture and precise gem-setting geometry.
Driven by Dandong Cal. 3120
The Dandong Caliber 3120 represents a significant departure from older replica movements that relied on base Miyota calibers with superficial decorative plates. This fully integrated clone mimics the genuine gear train layout, allowing the balance wheel and custom 22k gold-plated rotor to sit in their correct anatomical positions. The bridges exhibit sharp C么tes de Gen猫ve finishing, and every movement is evaluated against before dispatch to ensure optimal amplitude and beat error.
The Dandong Cal. 3120 clone is typically regulated to operate within 卤8��12 seconds per day under standard testing conditions, providing reliable daily performance.
- �� Power Reserve: Approximately 36 hours
- �� Complications: Hours, minutes, center seconds, and quick-set date at 3 o��clock
- �� Winding Direction: Bidirectional automatic winding
Construction & Specifications
The 37mm case maintains a slender 9.8mm profile, closely mirroring the genuine dimensions. The brushed/polished alternating finishing is executed with sharp transitions, particularly on the lug chamfers.
The dial features a deep black tapisserie pattern with correct square proportions and subtle concentric texturing. White gold-plated applied hour markers are filled with consistent luminous material.
Fitted with high-grade cubic zirconia stones, the bezel accurately replicates the factory gem-setting layout. The iconic eight hexagonal white gold-plated screws are properly aligned and recessed.
The integrated bracelet fit demonstrates excellent articulation with minimal lateral play. The double deployant AP folding clasp engages securely with crisp mechanical feedback.
Why We Selected ZF
Collectors frequently ask: ��Why not APSF?��
While APSF is highly regarded as the benchmark for 41mm Royal Oak references (such as the 15500), ZF��s execution of the 37mm 15451ST offers superior tapisserie dial texture depth and highly accurate CZ stone setting on the bezel. The geometry of the octagonal bezel and the integration of the bracelet links present a slightly more refined profile in this specific mid-size format.
Worth Noting: The custom gold-plated rotor on the clone 3120 movement can produce audible winding noise in quiet environments, a known characteristic of this specific caliber architecture.
Data Sheet
| MODEL REFERENCE | Royal Oak 15451ST |
| FACTORY / VERSION | ZF Edition |
| MOVEMENT | Dandong Cal. 3120 Clone |
| CASE MATERIAL | 316L Stainless Steel |
| WEIGHT & THICKNESS | 135g | 9.8mm |
| CRYSTAL & LUME | Sapphire with Colorless AR | Super-LumiNova |
| DIMENSIONS | 37mm � 135g � 9.8mmFigures are measured by hand; small tolerances apply. |
| WATER RESISTANCE | 50m stated rating �� professional pressure test recommended before swimming |
More from This Line
Collector Q&A
Q: Are the diamonds on the ZF 15451ST bezel real?
A: No, the stones used on this replica are high-quality cubic zirconia (CZ). They are meticulously set to mimic the factory diamond geometry and light refraction of the genuine piece, but they are not natural diamonds.
Q: How does the 37mm case wear compared to the 15400 or 15500?
A: The 37mm profile is significantly more compact, making it ideal for wrists under 7 inches. The integrated bracelet still provides a strong presence, but the 9.8mm thickness ensures it slides easily under a cuff without the bulk of the 41mm variants.
Q: Is the Dandong Caliber 3120 a true clone or a decorated base movement?
A: This specific ZF iteration utilizes a fully integrated clone architecture. This means the gear train and balance wheel are positioned to match the genuine AP 3120, unlike older Miyota-based versions that relied on glued-on decorative plates.
Q: What is the main technical quirk of this ZF release?
A: The custom 22k gold-plated rotor on the clone 3120 movement can exhibit slight unidirectional winding noise in a quiet room. This is a common characteristic of these specific clone movements and does not affect timekeeping performance.
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