Cosmograph Daytona
Oyster, 40 mm, Oystersteel and yellow gold
Reference 126503
The triumph of endurance
This Oyster Perpetual Cosmograph Daytona in Oystersteel and yellow gold, with a bright black and golden, diamond-set dial and an Oyster bracelet, features a yellow gold bezel with an engraved tachymetric scale.
Bright black and golden dial
With chronograph counters
This model features a bright black and golden, diamond-set 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
With its tachymetric scale, its three counters and its pushers, the Cosmograph Daytona was designed to be the ultimate timing tool for endurance racing drivers. The bezel features a tachymetric scale to read average speed over a given distance based on elapsed time.
This scale offers optimal legibility, making the Cosmograph Daytona the ideal instrument for measuring speeds up to 400 units per hour, expressed in kilometres or miles.
Yellow Rolesor
A meeting of two metals
Gold is coveted for its lustre and nobility. Steel reinforces strength and reliability. Together, they harmoniously combine the best of their properties.
A true Rolex signature, Rolesor has featured on Rolex models since the early 1930s, and was trademarked as a name in 1933. It is one of the prominent pillars of the Oyster collection.
The Oyster bracelet
Alchemy of form and function
The design, development and production of Rolex bracelets and clasps, as well as the stringent tests they face, involve advanced high technology. And, as with all the components of the watch, aesthetic controls by the human eye guarantee impeccable beauty.
The Oyster bracelet is a perfect alchemy of form and function. First introduced in the late 1930s, this particularly robust and comfortable metal bracelet with its broad, flat three-piece links remains the most universal bracelet in the Oyster collection.
More Cosmograph Daytona technical details
Reference 126503
Model case
Oyster, 40 mm, Oystersteel and yellow gold
Oyster architecture
Monobloc middle case, screw-down case back and winding crown
Diameter
40 mm
Material
Yellow Rolesor - combination of Oystersteel and yellow gold
Bezel
Fixed, with engraved tachymetric scale, in yellow gold
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
Oyster, three-piece solid links
Material
Yellow Rolesor - combination of Oystersteel and yellow gold
Clasp
Folding Oysterlock safety clasp with Easylink 5 mm comfort extension link
Dial
Bright black and golden set with diamonds
Gem settings
Diamonds in 18 ct gold settings
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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