Cosmograph
Daytona
Oyster, 40 mm, yellow gold
This Oyster Perpetual
Cosmograph Daytona in
18 kt yellow gold, with
an intense black and
champagne-colour dial
and an Oysterflex
bracelet, features a
black Cerachrom bezel
with tachymetric scale.
The Oysterflex Bracelet
Highly resistant and
durable
The 18 kt 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 kt yellow gold
Commitment to
excellence
By operating its own exclusive foundry, Rolex has
the unrivalled ability to cast the highest quality 18
kt gold alloys. According to the proportion
of silver, copper, platinum or palladium added,
different types of 18 kt 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.
Intense black and Champagne-colour dial
With chronograph
counters
This model features an intense black and
champagne-colour dial with spray-coated
counters, 18 kt gold applique hour markers and
hands with a Chromalight display, a highly-legible
luminescent material.
The dial allows drivers to 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 technical details
Cosmograph Daytona
Reference 126518LN
Model Case
Type
Oyster, 40 mm, yellow gold
Diameter
40 mm
Material
Yellow gold
Bezel
Black monobloc Cerachrom bezel in
ceramic with moulded tachymetric
scale
Oyster Architecture
Monobloc middle case, screw-down
case back and winding crown
Winding Crown
Screw-down, Triplock triple
waterproofness system
Crystal
Scratch-resistant sapphire
Water Resistance
Waterproof to 100 metres / 330
feet
Movement
Type
Perpetual, mechanical chronograph,
self-winding
Calibre
4131, manufacture Rolex
Precision
-2/+2 sec/day, after casing
Oscillator
Paramagnetic blue Parachrom
hairspring. High-performance
Paraflex shock absorbers
Winding
Bidirectional self-winding via
Perpetual rotor
Power reserve
Approximately 72 hours
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
Bracelet
Type
Oysterflex
Bracelet Material
Flexible metal blades overmoulded
with high-performance elastomer
Clasp
Folding Oysterlock safety clasp with
Rolex Glidelock extension system
Dial
Type
Intense black and champagnecolour
Details
Highly legible Chromalight display
with long-lasting blue luminescence
Certification
Type
Superlative Chronometer (official
chronometer certification + Rolex
certification after casing)