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Description
ARF Rolex DateJust 31 Ref. 278381RBR Chocolate Dial
The definitive 31mm execution featuring an industry-leading Everose gold wrap and the highly stable Clone 2236 caliber.
Powered by Super Clone Caliber 2236
Creating a reliable automatic movement for a 31mm case presents a significant engineering challenge due to spatial constraints. ARF addresses this by utilizing a dedicated Clone 2236 movement, specifically dimensioned for the mid-size DateJust platform. The caliber operates at a high-beat frequency of 28,800vph, ensuring the sweeping seconds hand mimics the genuine article. Furthermore, the keyless works have been engineered to replicate the correct crown setting direction of the genuine Rolex caliber, a detail verified through prior to dispatch.
This specific 2236 clone caliber is regulated to an operational variance of 卤10��15 seconds per day, consistent with standard high-beat Asian automatic platforms in this size category.
- �� Power Reserve: Approximately 36 hours
- �� Complications: Instantaneous date change at midnight with rapid setting
- �� Winding Direction: Bidirectional automatic winding
Technical Specifications
The 31mm case is machined to an exact 11.1mm thickness, weighing 83 grams. The mid-case features alternating brushed and polished surfaces, integrating seamlessly with the solid end links.
Features a rich sunburst finish that shifts organically under direct light. The applied Roman numeral indices are correctly proportioned, anchored by a precisely gem-set ��VI�� marker.
A fixed bezel set with replica diamonds. While lacking the refractive index of genuine stones, the claw alignments are highly symmetrical and tightly set against the Everose base.
Five-piece link construction utilizing 904L steel and a heavy 5-mil Everose gold wrap on the center links. Fastens via a smoothly operating concealed folding Crownclasp.
Why ARF for This Reference?
Many collectors ask: ��Why not GMF or WF?��
ARF dominates the two-tone DateJust sector primarily due to their proprietary Everose plating process. Rival factories frequently produce a rose gold tone that leans too heavily into a copper-red spectrum, identifying the watch as a replica under natural light. ARF��s wrap captures the subtle, warmer hue of genuine Rolex Everose, while maintaining tighter tolerances in the Jubilee bracelet endplay.
Full Disclosure: The replica diamonds on the RBR bezel and ��VI�� marker rely on cubic zirconia, which inevitably lacks the brilliance, fire, and microscopic setting precision of genuine Rolex factory diamonds.
LIVE PREVIEW
Data Sheet
| MODEL REFERENCE | DateJust 31 Ref. 278381RBR |
| FACTORY / VERSION | ARF Edition (Jubilee Two-Tone) |
| MOVEMENT | Super Clone Cal. 2236 |
| CASE MATERIAL | 904L Oystersteel & 18K Everose Gold Wrap |
| WEIGHT & THICKNESS | 83g | 11.1mm |
| CRYSTAL & LUME | Sapphire (AR Coated) | Chromalight |
| DIMENSIONS | 31mm � 37mm � 11.1mmManual measurements �� minor tolerances apply. |
| WATER RESISTANCE | 30m Stated Rating �� professional pressure test recommended before swimming |
Collector Q&A
Q: Is the Everose gold plating durable on the ARF Jubilee bracelet?
A: ARF utilizes a heavy 5-mil 18K Everose gold wrap rather than standard thin plating. While significantly more durable than budget replicas, it remains a layer over 904L steel. Avoid abrasive surfaces and harsh chemicals to maintain the finish long-term.
Q: Does the date change instantly at midnight like the genuine caliber 2236?
A: Yes. The Super Clone Caliber 2236 in this ARF edition features an instantaneous date change mechanism at midnight, rather than a slow roll, accurately mimicking the genuine movement.
Q: How accurate is the chocolate dial color compared to retail?
A: ARF has achieved a highly accurate sunburst chocolate tone that shifts dynamically in direct light. However, under heavy magnification, the sunburst grain is slightly more pronounced than the ultra-fine finish of a genuine Rolex dial.
Q: How do the replica diamonds on the RBR bezel and ��VI�� marker compare to genuine stones?
A: The factory uses cubic zirconia to replicate the diamond setting. While the claw alignment and geometric symmetry are excellent, these synthetic stones lack the refractive index, fire, and brilliance of genuine Rolex factory diamonds, especially under low lighting conditions.
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