VS Factory Weighted Grey Oysterflex Daytona (m126519ln) vs. Genuine Rolex: Technical Comparison

If you’re researching replica watches and want an objective breakdown of VS Factory’s “weighted grey Oysterflex” Daytona (Ref. m126519ln), here’s a detailed comparison with the genuine Rolex. This analysis focuses on various details such as materials, movements, dials and weight.See what’s different compared to the original.

Material Comparison

• Genuine Rolex: Features an 18k white gold case and Oysterflex rubber strap.
• VS Factory: Uses 904L steel with tungsten-infused caseback. At the same time, it can also be gold-plated later, and there will be no problem of peeling or paint falling off.Unlike cheaper replicas that add lead weights to the caseback (causing discomfort), VS’s approach preserves ergonomics. The strap is reinforced but slightly stiffer than Rolex’s.

Weight Comparison

• Genuine Rolex: weighing ~162g total.
• VS Factory: weighing ~136g total.

• The weight of the watch head is almost the same as the factory and original ones (the sample in the picture has only a 1g difference)

• The difference in the strap is about 25.7 grams, mainly because the buckle is made of platinum, while the VS factory buckle is made of 904 stainless steel. VS avoids “overstuffing” the bracelet (a common replica shortcut that sacrifices flexibility).

Dial Comparison

• The details of the VS factory are basically the same as the original ones. The Cerachrom bezel, engraving depth, font and center axis are almost the same.

Watch Thickness & Diameter Comparison

• Thickness: The difference between the two is only 0.28 mm (indistinguishable on wrist).
• Diameter:The size is the same.

Detail Comparison: Strap And Buckle

• The overall shell shape of the VS factory is the same as the original one, and there is no bloated shell problem of other factory versions.

Back Lettering

Movement: Clone vs. Genuine

• Genuine Cal. 4130: A chronograph movement with 72-hour power reserve and vertical clutch for smooth operation.
• VS’s Dandong 4131 Clone:
  • Functionality: Fully operational chronograph (start/stop/reset), matching the genuine’s 72-hour reserve.
  • Interchangeability: 95% of parts (including balance wheel and escapement) are swappable with genuine components.
  • Finishing: Perlage and Geneva stripes are less refined than Rolex’s but superior to Shanghai 4131 clones used by competitors.

Wearability Notes

• Weight: At 136g, VS’s watch feels substantial—unlike lightweight replicas that scream “fake.”
• Strap Comfort: The Oysterflex replicates Rolex’s dual-blade system but lacks the genuine’s buttery suppleness.
• Water Resistance: VS rates theirs at 30m (splash-proof), while genuine achieves 100m.

Conclusion

VS Factory’s version is the closest replica available for the grey Oysterflex Daytona, with 90% accuracy in aesthetics and functionality. The only tells are the slightly lighter clasp and marginally stiffer strap. This price is only 1/10th.If you prioritize affordability over absolute perfection, this is a viable alternative—especially given its interchangeable movement parts and balanced weight.