Rolex Daytona 126518 40mm UFO Black Subdial Oysterflex UF4131 Free Sprung
Craftsmanship & Technical Specifications
Atelier Description & Craftsmanship
When Clean / VS Factory disassembled a genuine reference to tool the molds for the Rolex Daytona 126518 40mm UFO Black Subdial Oysterflex UF4131 Free Sprung, they started with the movement bridges and worked outward. That’s why the 40MM × 12.2mm (1:1 Case Profile) case in Solid 904L Oystersteel (Satin & Mirror Finished) sits flat on the wrist and houses the Dandong DD4130 / SH4131 Integrated Chronograph (72-Hour Extended Reserve (28,800 vph)) without adding a single millimeter of excess thickness.
Calibre Stability, Power Reserve & Case Finishing
Dial legibility is anchored by diamond-cut hands, evenly filled luminescent plots, and a flush sapphire crystal. The bracelet links articulate on solid threaded pins rather than friction sleeves, making sizing straightforward with a standard 1.4mm screwdriver.
Direct Atelier Sourcing & Buyer Protection
Every Rolex Daytona 126518 40mm UFO Black Subdial Oysterflex UF4131 Free Sprung goes through our three-stage Geneva bench check within 24–48 hours of your order: first, a 5-position digital timegrapher calibration (+/- 2s/day); second, a dry vacuum pressure test on the case seals; and third, a macro video inspection sent directly to your WhatsApp or email for sign-off. Your shipment travels via insured triangular express air freight with a 100% customs pass guarantee and our 3-year mechanical warranty.
Rolex Daytona Shootout: Clean Factory DD4130 vs BTF vs Genuine (2026)
Comparing Cosmograph chronographs? Read our technical shootout analyzing Clean Factory's Dandong DD4130 working column-wheel movement, Cerachrom bezel, and 12.2mm case profile.
Read Complete Technical ComparisonEvery timepiece at SwissClone undergoes a 48-hour timegrapher inspection and waterproof pressure test before insured worldwide dispatch. Explore related collections and matching references below:
Technical Specifications Matrix
| Manufacture & Reference | Rolex Daytona 126518 40mm UFO Black Subdial Oysterflex UF4131 Free Sprung |
|---|---|
| Atelier / Factory | Clean / VS Factory (Certified Tier 1 Atelier) |
| Movement Architecture | 1:1 Super Clone Calibre 4131 Chronograph (28,800 vph, 72h Reserve) |
| Case Metallurgy | Solid 904L Oystersteel (Exact 1:1 Weight & Finish) |
| Crystal & Lens | Double AR Coated Scratchproof Sapphire |
| Water Resistance | Vacuum Pressure Tested to 50m (5 ATM) |
| Luminescence | Swiss Super-LumiNova Luminescent Coating |
| Warranty & QC | 3-Year Comprehensive Mechanism Warranty + 48h QC |