QF Factory Edition — Oysterflex Strap
The introduction of the QF Factory tungsten-weighted Daytona marks a critical shift in the replication of precious metal references. By integrating a dense tungsten alloy core, this 126518LN achieves a mass of approximately 150 grams, directly addressing the historical tactile discrepancy of lightweight steel replicas.
At its core lies the SH4131 clone caliber, engineered with a fully functional vertical clutch chronograph mechanism. This movement correctly replicates the updated rotor aesthetics and bridge layout of the 2023+ generation, operating with stable amplitude and a realistic chronometric profile.
The 40mm case is plated in 18k yellow gold and features the sunburst black dial with contrasting champagne sub-dials. QF has accurately captured the thinner sub-dial rings specific to the 126xxx series, while the black Cerachrom bezel features the correct new-generation metallic outer rim.
- Movement: SH4131 Clone Caliber — Approximately 36 hours
- Case Material: Tungsten Alloy Core with 18k YG Plating, 40mm x 46.5mm, ~150g
- Bezel: Black Cerachrom with 18k YG plated metallic rim
- Crystal: Scratch-resistant sapphire with anti-reflective coating
- Bracelet: Oysterflex elastomer strap with Oysterlock safety clasp
- Water Resistance: 30m rating — professional pressure test recommended before swimming. Do not operate chronograph pushers or the crown while the watch is submerged.
Designed for the collector who prioritizes authentic wrist weight and new-generation aesthetic accuracy. The added mass provides a wearing experience that standard steel iterations cannot replicate.

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