Rolex Cosmograph Daytona 126500LN 40mm Black Dial Oystersteel Cerachrom Bezel Chronograph

The Rolex Cosmograph Daytona 126500LN in black dial form is the purest expression of the modern steel chronograph. Understated, powerful, and instantly recognizable, this reference refines the legendary Daytona silhouette with subtle case updates and a next-generation movement—while preserving the DNA that made it one of the most coveted watches in the world.

Design & Case

Crafted from corrosion-resistant 904L Oystersteel, the 40mm case features refined lugs and a slimmer visual profile compared to its predecessor. The black Cerachrom ceramic bezel, engraved with a tachymetric scale, reinforces the Daytona’s racing heritage while offering exceptional scratch resistance and long-term color stability.

The glossy black dial delivers a sleek, monochromatic aesthetic. Contrasting snailed subdials enhance legibility and depth, while Chromalight hour markers and hands emit a long-lasting blue glow in low light conditions.

Movement – Caliber 4131

Powering the 126500LN is Rolex’s updated in-house Caliber 4131 automatic chronograph movement, offering:

• Chronergy escapement for improved energy efficiency

• Parachrom hairspring for superior resistance to shocks and magnetic fields

• Approximately 72-hour power reserve

• Superlative Chronometer precision (−2/+2 seconds per day after casing)

The 4131 introduces upgraded finishing and a redesigned oscillating weight, representing the most technically refined steel Daytona to date.

Bracelet

The watch is fitted on the iconic Oyster bracelet with solid links and an Oysterlock safety clasp. The Easylink comfort extension system allows for approximately 5mm of on-the-fly adjustment for a perfect fit.

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Specifications

• Reference: 126500LN

• Case Size: 40mm

• Case Material: Oystersteel

• Bezel: Black Cerachrom ceramic with tachymetric scale

• Dial: Black with contrasting chronograph counters

• Movement: Rolex Caliber 4131, automatic chronograph

• Power Reserve: ~72 hours

• Water Resistance: 100 meters / 330 feet

• Bracelet: Oyster bracelet with Oysterlock clasp