Rolex Cosmograph Daytona 4131 SC M126500LN – Black Dial
The Rolex Cosmograph Daytona M126500LN represents the pinnacle of chronograph engineering, housing the manufacture Calibre 4131 movement within a 40mm Oystersteel case. The black Cerachrom bezel and matching black dial create a commanding presence on the wrist, while the Oyster bracelet ensures enduring comfort and security.
Movement & Calibre
Powered by the in-house Calibre 4131, this self-winding mechanical chronograph movement features a Chronergy escapement, offering approximately 72 hours of power reserve. The movement is certified as a Superlative Chronometer by Rolex, guaranteeing precision of -2/+2 seconds per day after casing.
Case & Construction
The 40mm Oystersteel case is engineered for durability and water resistance to 100 metres (330 feet). The monobloc middle case, screw-down case back, and Triplock triple waterproofness system ensure the movement remains protected in demanding conditions. The black Cerachrom bezel insert in ceramic is virtually scratchproof and features an engraved tachymetric scale.
Dial & Legibility
The black dial features applied hour markers in 18ct white gold with Chromalight display, offering long-lasting blue luminescence in low-light conditions. Three counters at 3, 6, and 9 o'clock track elapsed time with precision, while the central sweep seconds hand provides instantaneous chronograph readability.
Bracelet & Clasp
The three-piece link Oyster bracelet in Oystersteel is fitted with an Oysterlock folding safety clasp and Easylink 5mm comfort extension link, allowing fine adjustment without tools. The bracelet's robust construction and polished centre links balance sport and refinement.
Specifications
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Reference: M126500LN
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Case Diameter: 40mm
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Case Material: Oystersteel (904L stainless steel)
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Bezel: Black Cerachrom ceramic with engraved tachymetric scale
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Crystal: Scratch-resistant sapphire
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Movement: Calibre 4131, self-winding mechanical chronograph
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Power Reserve: Approximately 72 hours
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Water Resistance: 100 metres / 330 feet
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Bracelet: Oystersteel Oyster with Oysterlock clasp
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Functions: Chronograph, hours, minutes, small seconds
Condition & Authenticity
This timepiece is offered with full verification of authenticity. All details regarding condition, included accessories, box, papers, and warranty status are confirmed prior to dispatch. Please contact us for specific condition reports and imagery.
Why This Watch
The M126500LN combines Rolex's motorsport heritage with contemporary manufacturing excellence. The 4131 movement represents a significant evolution in chronograph architecture, offering improved efficiency, reliability, and serviceability. The black dial configuration remains the most versatile and sought-after variant in the current Daytona lineup.
