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Description
ARF Rolex Datejust 31 Ref. 278384RBR Mint Green
ARF delivers a structurally superior mid-size Datejust, prioritizing 904L steel tolerances and bracelet articulation over superfluous movement decoration.
Powered by the Clone 2236 Caliber
Driving this 31mm reference is a dedicated Asian clone 2236 automatic movement. Because the compact dimensions of the mid-size Oyster case restrict the use of standard 3135 or 3235 architectures, this specific caliber is engineered to maintain reliability within a smaller footprint. While it lacks the proprietary Syloxi hairspring of the genuine Rolex movement, it utilizes a dependable metallic hairspring and traditional index regulation. All mechanical components undergo to ensure consistent amplitude and beat error prior to dispatch.
Standard clone 2236 movements typically operate within a tolerance of 卤10��15 seconds per day, depending on resting position and power reserve levels.
- �� Power Reserve: Approximately 36 hours
- �� Complications: Centre hour, minute and seconds hands; instantaneous date with rapid setting
- �� Winding Direction: Bidirectional automatic winding
Technical Specifications
The monobloc middle case measures an accurate 31mm in diameter and 10.2mm in thickness, featuring high-polish flanks and brushed lug hoods that closely mirror genuine finishing techniques.
The dial exhibits a fine sunburst texture that captures light dynamically. Applied indices are treated with Chromalight-style luminescence for a distinct blue glow in low-light conditions.
Replicating the RBR reference, the bezel is set with synthetic stones. While lacking the full refractive index of factory diamonds, the setting is secure and visually impressive under ambient lighting.
Constructed from solid 904L steel, the Jubilee bracelet features polished center links and brushed outer links, secured by a folding Oysterclasp with tight end-link tolerances.
Why ARF for This Reference?
Many collectors ask: ��Why not GMF or EWF?��
ARF is widely recognized for its superior metallurgical work. While GMF offers a wide variety of dial options, ARF��s 904L Oystersteel formulation and bracelet articulation are generally considered a tier above. The 79.5-gram weight of this specific model provides a tactile authenticity that lighter, lower-tier replicas fail to achieve, and the folding Oysterclasp snaps shut with a reassuring, factory-like resistance.
Full Disclosure: The synthetic stones used on the bezel, while bright, do not possess the identical dispersion or hardness of genuine Rolex flawless diamonds, and the compact 2236 clone rotor can be slightly audible in quiet environments.
LIVE PREVIEW
Data Sheet
| MODEL REFERENCE | 278384RBR-0030 |
| FACTORY / VERSION | ARF Super Clone Edition |
| MOVEMENT | Clone 2236 Automatic |
| CASE MATERIAL | Solid 904L Oystersteel |
| WEIGHT & THICKNESS | 79.5 g | 10.2 mm |
| CRYSTAL & LUME | Sapphire with Cyclops | Chromalight blue |
| DIMENSIONS | 31.0 mm � ~37.0 mm � 10.2 mmManual measurements �� minor tolerances apply. |
| WATER RESISTANCE | 50 Meters �� professional pressure test recommended before swimming |
Collector Q&A
Q: Does the clone 2236 movement in the ARF Datejust 31 feature a silicon Syloxi hairspring like the genuine?
A: No. While the movement is engraved to resemble the Rolex calibre 2236, it utilizes a standard Nivarox-style metallic hairspring and traditional index regulation. The architecture is a modified Asian automatic base designed to fit the compact 31mm case.
Q: Are the stones on the ARF m278384rbr bezel real diamonds?
A: The factory utilizes high-quality cubic zirconia or synthetic moissanite crystals for the bezel. While they provide excellent light play under artificial lighting, they do not possess the exact refractive index or hardness of genuine Rolex factory diamonds.
Q: How does the 79.5g weight of this ARF replica compare to the authentic Datejust 31?
A: The genuine reference 278384RBR in Oystersteel with a white gold diamond bezel weighs approximately 82 to 85 grams depending on the number of bracelet links. At 79.5g, the ARF version feels highly accurate on the wrist, successfully replicating the heft of solid 904L steel.
Q: Is the rotor noise noticeable on this specific 31mm clone movement?
A: Due to the compact case dimensions and the specific bearing design of the Asian clone 2236, the automatic winding rotor can produce a faint, audible whirring sound in quiet environments. Many collectors choose to have the rotor bearings lightly silenced with Moebius 9010 oil by a watchmaker.
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