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Description
Sonic Factory Rolex Daytona “Artisans de Genève” Skeleton Ref. 116520 Base
A mechanical milestone that introduces a physically skeletonized Dandong 4130, rendering older 7750-based artisan replicas structurally obsolete.
Powered by True Dandong 4130 Skeleton
The engineering required to skeletonize a chronograph movement without compromising its structural integrity is substantial. Sonic Factory has taken the highly regarded Dandong 4130—the same robust base utilized by Clean and BTF—and subjected it to extensive CNC milling. The mainplate and bridges have been meticulously cut away, sandblasted, and finished with hand-polished chamfers (anglage) to emulate Swiss bespoke modifications. Crucially, the vertical clutch and column wheel mechanisms remain fully intact, ensuring the chronograph seconds hand starts without the telltale jump associated with horizontal clutch designs.
⏱ Accuracy Profile:
The modified Dandong 4130 in this configuration typically yields an accuracy of ±3–5 seconds per day. Despite the removal of structural mass, the free-sprung balance architecture maintains excellent isochronism across its power band.
- ✅ Power Reserve: 48 Hours
- ✅ Complications: Fully functional 12-hour chronograph, 30-minute counter, running seconds
- ✅ Winding Direction: Bidirectional automatic winding via customized skeletonized rotor
Technical Specifications
THE BUILD904L Oystersteel
The case retains the precise 40mm diameter and slim 12.2mm profile of the genuine Daytona. The alternating brushed and polished finishing on the lugs and case flanks is executed with sharp, defined transitions.
THE DIALFully Skeletonized Display
The traditional dial is entirely absent, replaced by a custom chapter ring and floating subdials. While some bespoke AdG units feature dark green dial accents, the primary visual draw here is the exposed, sandblasted metallic gear train and custom handset.
THE BEZEL904L Steel or Forged Carbon
Depending on the specific AdG variant, the bezel features either high-polish 904L steel with deep engraved tachymeter markings or a matte forged carbon insert with correct marbling.
THE BRACELETOyster Bracelet with Oysterlock
Constructed from solid 904L links with polished center links (PCLs). The Oysterlock safety clasp features the Easylink 5mm comfort extension, operating with precise, tactile feedback.
Why Sonic Factory for This Reference?
Many collectors ask: “Why not wait for Clean or BTF to release a skeleton?”
Sonic Factory has specialized entirely in the modification of the Dandong 4130 for artisan builds. While Clean and BTF excel at standard production models, they do not currently produce physically skeletonized plates. Previous AdG replicas relied on the Shanghai 7750, which necessitated a thicker case and utilized a decorative faux-plate over the movement. Sonic provides the correct 12.2mm thickness and true mechanical transparency.
Full Disclosure: Under 10x loupe magnification, the hand-polished chamfers (anglage) on the Sonic skeleton bridges exhibit faint machine marks that fall short of genuine Swiss haute horlogerie finishing standards.
LIVE PREVIEW
Data Sheet
| MODEL REFERENCE | Artisans de Genève Daytona (116520 Base) |
| FACTORY / VERSION | Sonic Factory Edition |
| MOVEMENT | True Dandong 4130 Skeleton |
| CASE MATERIAL | 904L Oystersteel |
| WEIGHT & THICKNESS | ~135g | 12.2mm |
| CRYSTAL & LUME | Dual Sapphire (Front & Back) | Chromalight Blue |
| DIMENSIONS | 40.0mm × 46.5mm × 12.2mmManual measurements — minor tolerances apply. |
| WATER RESISTANCE | Stated 30m — professional pressure test recommended before swimming |
Collector Q&A
Q: Is the movement in the Sonic Factory edition a true Dandong 4130?
A: Yes. Sonic Factory utilizes the genuine Dandong 4130 clone caliber as its base—the same highly regarded movement used by Clean and BTF. However, Sonic heavily modifies it via CNC milling to physically skeletonize the mainplate and bridges, rather than simply applying a decorative top plate.
Q: Does the skeletonization affect the chronograph functionality?
A: No. The vertical clutch and column wheel mechanisms remain fully intact and operational. The chronograph functions exactly as the standard 4130, providing a crisp pusher feel and a smooth sweep without the initial stutter seen in older 7750-based replicas.
Q: Will the removal of material from the movement bridges impact long-term reliability?
A: While physically removing metal from the movement bridges inherently makes the caliber slightly more delicate against heavy impact, the core gear train and free-sprung balance architecture of the Dandong 4130 remain highly robust. It will perform reliably under normal wear, though extreme sports should be avoided.
Q: How does the movement finishing compare to a genuine Artisans de Genève modification?
A: While Sonic achieves an impressive visual aesthetic at a macro level, under a 10x horological loupe, the limitations of mass production become apparent. The hand-polished chamfers (anglage) on the skeletonized bridges will show faint CNC machine marks and lack the perfectly mirrored, rounded edges executed by Swiss artisans.
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