Cosmograph Daytona
Oyster, 40 mm, yellow gold
Reference 126518LN
The triumph of endurance
This Oyster Perpetual Cosmograph Daytona in 18 ct yellow gold with a golden and bright black dial and an Oysterflex bracelet, features a black Cerachrom bezel with tachymetric scale.
The Oysterflex Bracelet
Highly resistant and durable
The 18 ct gold versions of the Cosmograph Daytona with a Cerachrom bezel are available with an Oysterflex bracelet. Developed by Rolex and patented, it singularly combines the robustness of a metal bracelet with the comfort of an elastomer bracelet.
It is made up of two flexible curved metal blades – one in each bracelet section – overmoulded with high-performance black elastomer. For optimum comfort, the Oysterflex bracelet is equipped with cushions on its inner sides and an Oysterlock safety clasp to prevent accidental opening. Its length may be adjusted via the ingenious Rolex Glidelock extension system.
18 ct yellow gold
Commitment to excellence
By operating its own exclusive foundry, Rolex has the unrivalled ability to cast the highest quality 18 ct gold alloys. According to the proportion of silver, copper, platinum or palladium added, different types of 18 ct gold are obtained: yellow, pink or white.
They are made with only the purest metals and meticulously inspected in an in-house laboratory with state-of-the-art equipment, before the gold is formed and shaped with the same painstaking attention to quality. Rolex's commitment to excellence begins at the source.
Golden and bright black dial
With chronograph counters
This model features a golden and bright black dial with snailed counters, 18 ct gold applique hour markers and hands with a Chromalight display, a highly-legible luminescent material.
The central sweep seconds hand allows an accurate reading of 1/8 second, while the two counters on the dial display the lapsed time in hours and minutes. Drivers can accurately map out their track times and tactics without fail.
The tachymetric scale
High-performance chronograph
A key part of the model’s identity is the bezel moulded with a tachymetric scale for measuring average speeds of up to 400 miles or kilometres per hour. Blending high technology with sleek aesthetics, the black bezel is reminiscent of the 1965 model that was fitted with a black Plexiglas bezel insert.
The monobloc Cerachrom bezel in high-tech ceramic offers a number of advantages: it is corrosion resistant, virtually scratchproof and the colour is unaffected by UV rays. This extremely durable bezel also offers an exceptionally legible tachymetric scale, thanks to the deposition of a thin layer of platinum in the numerals and graduations via a PVD (Physical Vapour Deposition) process. The monobloc Cerachrom bezel is made in a single piece and holds the crystal firmly in place on the middle case, ensuring waterproofness.
More Cosmograph Daytona technical details
Reference 126518LN
Model case
Oyster, 40 mm, yellow gold
Oyster architecture
Monobloc middle case, screw-down case back and winding crown
Diameter
40 mm
Material
18 ct yellow gold
Bezel
Black monobloc Cerachrom bezel in ceramic with moulded tachymetric scale
Winding crown
Screw-down, Triplock triple waterproofness system
Crystal
Scratch-resistant sapphire
Water resistance
Waterproof to 100 metres / 330 feet
Movement
Perpetual, mechanical chronograph, self-winding
Calibre
4131, manufacture Rolex
Precision
-2/+2 sec/day, after casing
Functions
Centre hour and minute hands, small seconds hand at 6 o'clock. Chronograph via centre seconds hand, 30-minute counter at 3 o'clock and 12-hour counter at 9 o'clock. Stop seconds for exact time setting
Oscillator
Paramagnetic blue Parachrom hairspring. High-performance Paraflex shock absorbers
Winding
Bidirectional self-winding via Perpetual rotor
Power reserve
Approximately 72 hours
Bracelet
Oysterflex
Material
Flexible metal blades overmoulded with high-performance elastomer
Clasp
Folding Oysterlock safety clasp with Rolex Glidelock extension system
Dial
Golden and bright black
Details
Highly legible Chromalight display with long-lasting blue luminescence
Certification
Superlative Chronometer (COSC + Rolex certification after casing)
Learn how to set the time and other functions of your Rolex watch by consulting our user guides.
Cosmograph Daytona
Brochure
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