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Description
OMF Omega Seamaster Planet Ocean 600m Chronograph 45.5mm
OMF delivers the most technically ambitious iteration of the caliber 9900, successfully replicating the dual-register chronograph layout.
Powered by OMF Clone Caliber 9900
The movement inside this reference is a heavily modified Asian 7750 base, engineered specifically to mimic the in-house Omega Caliber 9900. By re-gearing the chronograph module, OMF achieved the signature Co-Axial Master Chronometer layout, placing both the elapsed hour and minute hands on a single pinion at the 3 o��clock subdial. The decoration includes blackened screws, barrel design elements, and a red-lettered rotor that aligns with the genuine aesthetic when viewed through the exhibition caseback.
Due to the complex gearing required for the dual-hand subdial on a 7750 base, this movement typically regulates to 卤10��15 seconds per day. Regular servicing of the chronograph module is advised for long-term stability.
- �� Power Reserve: Approximately 36 hours
- �� Complications: Dual-hand chronograph subdial at 3 o��clock, running seconds at 9 o��clock, date display at 6 o��clock
- �� Winding Direction: Unidirectional (clockwise)
Technical Specifications
Measuring 45.5mm in diameter with a substantial 162.8g verified weight, the case features accurately defined bevels and alternating brushed flanks with polished lug chamfers.
The high-gloss dial utilizes genuine [ZrO2] ceramic, featuring applied indices filled with Super-LumiNova and crisp, raised silver text that maintains legibility under magnification.
The unidirectional 120-click bezel accurately replicates the genuine model��s material fusion, blending a black ceramic insert with an injected orange rubber 15-minute sector.
A pliable black rubber strap with orange stitching and inner lining, secured by a brushed 316L stainless steel deployant clasp with twin push-button release.
Why OMF for This Reference?
Many collectors ask: ��Why not VSF?��
While VSF is the undisputed leader for three-hand Co-Axial models (caliber 8900), they have historically struggled to replicate the caliber 9900 chronograph module. OMF engineered a specific modification to the 7750 base that allows the 3 o��clock subdial to function exactly like the genuine��housing both the elapsed hour and minute hands on a single pinion.
Full Disclosure: Because it relies on a heavily modified Asian 7750 architecture rather than a true ground-up Co-Axial design, the OMF movement exhibits noticeable rotor noise and necessitates a slightly thicker overall case profile compared to the genuine 18.9mm specification.
LIVE PREVIEW
Data Sheet
| MODEL REFERENCE | 215.32.46.51.01.001 |
| FACTORY / VERSION | OMF Edition |
| MOVEMENT | OMF Clone Caliber 9900 (Modified 7750) |
| CASE MATERIAL | 316L Stainless Steel |
| WEIGHT & THICKNESS | 162.8g | 19.3mm |
| CRYSTAL & LUME | Domed Sapphire (AR Coated) | Super-LumiNova |
| DIMENSIONS | 45.5mm � 51.5mm � 19.3mmManual measurements �� minor tolerances apply. |
| WATER RESISTANCE | Stated 30m �� professional pressure test recommended before swimming |
Collector Q&A
Q: Does the 3 o��clock chronograph subdial function correctly on this OMF version?
A: Yes, the OMF caliber 9900 clone features a functioning dual-hand subdial at 3 o��clock, tracking both elapsed hours and minutes simultaneously, mirroring the genuine mechanism.
Q: How does the 162.8g weight compare to the retail model?
A: At 162.8g on the rubber strap, the OMF provides a substantial, top-heavy presence that is nearly identical to the genuine 45.5mm Planet Ocean Chronograph.
Q: Is the orange segment on the bezel painted or actual rubber?
A: Following the genuine construction, the first 15 minutes of the OMF bezel feature a vulcanized orange rubber injection set into the black ceramic [ZrO2] insert, rather than simple painted enamel.
Q: What is the main drawback of the OMF 9900 movement compared to genuine?
A: Because it relies on a heavily modified Asian 7750 architecture to achieve the complex subdial layout, the movement exhibits noticeable rotor noise and necessitates a slightly thicker overall case profile compared to the genuine piece.
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