Left: (Authentic) — Right: (Shanghai 4131) Detailed comparison of genuine vs. replica images for the molded Rolex in-house multifunction chronograph movement 4131. Detailed comparison of genuine vs. replica images for the molded Rolex in-house multifunction chronograph movement 4131. C Factory’s new Daytona 4131 movement, Daytona movement diagram.The 4131 movement is manufactured by Shanghai 4130, featuring 75-hour power reserve. Movement finishing/plating/engraving/assembly are independently completed by C Factory. Therefore, strictly speaking, the Shanghai 4131 movement is a collaborative effort between Shanghai and C Factory.Numerous issues present in the previous Shanghai 4130 movement—such as stability concerns, chronograph reset failure, rough finishing, incorrect dimensions, winding feel, and rotor noise—are all perfectly resolved in the 4131.Additionally, Clean has secured exclusive production rights for the Shanghai 4131 movement. Visual comparisons reveal that disassembled genuine 4131 and SH 4131 movements share identical appearance and dimensions, though minor differences exist in specific shock absorber stones.It’s crucial to emphasize that Shanghai’s previous 4130 movement and this new 4131 belong to entirely different tiers of quality in every detail. A limited number of pre-release samples have already been distributed, receiving excellent feedback from customers. Of course, this 4131 still requires market validation—we ask for your patience, and we promise it will deliver a pleasant surprise. The engraving shown in the images is a preliminary version; the final production batch will be much closer to the authentic design. Overall, the level of replication is exceptionally high.
Left: (Authentic) — Right: (Shanghai 4131)
Detailed comparison of genuine vs. replica images for the 4131 Rolex in-house multifunction chronograph movement replica.
Detailed comparison of genuine vs. replica images for the molded 4131 Rolex in-house multifunction chronograph movement. C Factory’s new Daytona 4131 movement, Daytona movement diagram.
The 4131 movement is manufactured by Shanghai 4130, featuring 75-hour power reserve. Movement finishing/plating/engraving/assembly are independently completed by C Factory.
Therefore, strictly speaking, the Shanghai 4131 movement is a collaborative effort between Shanghai and Clean.
Numerous issues present in the previous Shanghai 4130 movement—such as stability concerns, chronograph reset failure, rough finishing, incorrect dimensions, winding feel, and rotor noise—are all perfectly resolved in the 4131.
Additionally, Clean exclusively manufactures the Shanghai 4131 movement.
Through visual comparisons, we observe that the disassembled genuine 4131 and SH 4131 share identical appearance and dimensions.
However, minor differences exist in specific shock absorber stones.
It’s crucial to emphasize that Shanghai’s previous 4130 movement and this new 4131 belong to entirely different tiers of quality in every detail.
A limited number of pre-release units have already been distributed for internal testing, with excellent customer feedback. Of course, this 4131 still requires market validation—we ask for your patience, and it will surely deliver a pleasant surprise.
The engraving shown in the images is a preliminary version; the final production batch will be much closer to the intended design.
Overall, the level of authenticity is exceptionally high.
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