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Description
QF Rolex Daytona M126509-0001 �� Weighted 180g Edition
By integrating tungsten into the case architecture, QF bridges the tactile weight gap inherent in replicating solid white gold chronographs.
Powered by Clone Calibre 4131
The clone Calibre 4131 represents the current generation of Daytona movements, updating the visual architecture of the outgoing 4130. It incorporates the distinct skeletonized oscillating weight and features Rolex C么tes de Gen猫ve finishing across the bridges. Mechanically, it relies on a column wheel and vertical clutch system, ensuring the chronograph seconds hand starts without the stutter commonly associated with lateral clutch designs. The balance assembly utilizes a paramagnetic blue Parachrom hairspring clone and KIF-style shock absorbers for daily stability.
Regulated to approximately 卤5��8 seconds per day. The vertical clutch architecture ensures amplitude remains stable even with the chronograph engaged.
- �� Power Reserve: Approximately 36 hours
- �� Complications: Central chronograph seconds, 30-minute counter, 12-hour counter, small seconds
- �� Winding Direction: Bidirectional
Technical Specifications
Engineered to a verified 12.0mm thickness and 40mm diameter. The internal tungsten integration brings the total mass to 180g, simulating the density of an 18k white gold case.
Features a deep black primary surface contrasted by silver metallic sub-dials with precise concentric snailing. Applied indices are filled with blue-emitting Chromalight.
Fixed steel bezel featuring an engraved tachymetric scale. The font depth and lacquer fill closely match the modern 126509 aesthetic.
Three-piece solid links with polished center links and brushed outer links. Secured by an Oysterlock safety clasp featuring a 5mm comfort extension link.
Why QF for This Reference?
Many collectors ask: ��Why not Clean Factory?��
While Clean Factory is renowned for exceptional dial accuracy and crystal clarity, their standard steel Daytonas weigh approximately 140g. For a reference like the 126509, which is originally cast in solid 18k white gold, this weight deficit is immediately noticeable on the wrist. QF��s weighted 180g case provides the necessary tactile heft, making it the superior choice for collectors who value physical presence alongside visual accuracy.
Full Disclosure: The internal tungsten sleeve slightly alters the acoustic resonance of the case, making the rotor rotation marginally more audible than in standard hollow-steel variants.
Data Sheet
| MODEL REFERENCE | M126509-0001 |
| FACTORY / VERSION | QF Weighted Edition |
| MOVEMENT | Clone Calibre 4131 |
| CASE MATERIAL | 904L Oystersteel + Tungsten Core |
| WEIGHT & THICKNESS | 180g | 12.0mm |
| CRYSTAL & LUME | Sapphire | Chromalight |
| DIMENSIONS | 40mm � 46.5mm � 12.0mmManual measurements �� minor tolerances apply. |
| WATER RESISTANCE | 50 meters �� professional pressure test recommended before swimming |
Collector Q&A
Q: How does the 180g weight of this QF Daytona compare to the genuine 126509?
A: The genuine 18k white gold 126509 weighs approximately 200g to 210g depending on the number of links installed. At 180g, this QF tungsten-weighted model gets significantly closer to the authentic tactile experience than standard 140g steel replicas.
Q: What are the differences between the clone 4131 and the older 4130 movement?
A: The 4131 clone updates the aesthetic architecture to match Rolex��s latest generation, featuring Rolex C么tes de Gen猫ve on the bridges and a skeletonized oscillating weight, while retaining the reliable vertical clutch chronograph mechanism of the 4130.
Q: Are the silver sub-dials accurate in their metallic finish?
A: QF has achieved a highly accurate sunray finish on the silver sub-dials, which contrast correctly against the deep black main dial, avoiding the overly matte appearance seen on earlier iterations.
Q: Does the tungsten weighting affect the case dimensions or internal mechanics?
A: The external dimensions remain true to spec at 40mm by 12.0mm thick. However, the internal tungsten sleeve slightly reduces the available internal volume, which alters the case��s acoustics and can make the rotor sound slightly more pronounced.