What Are the Differences Between Rolex Cal.4131 and Cal.4130 Movements?

  1. Slender Hour Markers The dial of the new-generation Daytona features a more elongated design. Compared with its predecessor, the hour markers on the older reference 116500LN are noticeably thicker. On the updated 126500LN, these hour markers are nearly halved in width and much slimmer.
  2. More Elegant Chronograph Subdials The three chronograph rings on the previous 116500LN are thick, prominent and highly eye‑catching. In contrast, the lines of the three subdials on the new 126500LN are refined and better proportioned to the numerals.
  3. Crown Logo at the 6 O’Clock Position Recent new Rolex models include a tiny crown emblem at the 6 o’clock position, and the new Daytona follows this design trend. The crown sits between the words “SWISS MADE”. Although small, this logo serves as an obvious visual marker to tell new-generation Rolex watches apart from older versions alongside dial styling.
  4. Metal Ring Added to the Ceramic Bezel The ceramic bezel on the latest Daytona appears slightly smaller, thanks to an added outer metal ring. This ring protects the ceramic insert and harmonizes visually with the slimmer chronograph subdials.
  5. Significant Case Redesign Viewed head-on, the two generations of Daytona share a similar case appearance. From the side, however, the lugs of the new model feature more pronounced curves and a more substantial look, altering the transition between lugs and the bracelet.
  6. Upgraded Movement This Daytona houses the newly developed Cal.4131 self-winding movement. Additional ball bearings improve the efficiency of the automatic winding system. Compared to the prior Cal.4130 movement, it adopts Rolex’s Chronergy escapement and Paraflex shock absorber from the Cal.3235 platform. The bridges are finished primarily with new Geneva wave decoration, whereas the older Cal.4130 uses perlage radiating grain. Aside from these changes, most specifications remain identical to the 4130; it is a moderate iterative upgrade rather than a complete overhaul.

Owners of genuine examples need not feel disappointed. The Cal.4131 only brings minor tweaks with no fundamental leap in performance. For replica watches, word has it that Clean Factory plans to launch its version next year. If you are not purchasing the Ice Blue or platinum variants, the differences are negligible, as steel models retain a solid case back. See-through case backs are exclusive to the top-tier full white gold Daytona. Replica Cal.4131 and 4130 movements deliver identical performance, differing only in engraved markings.

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