Rolex Cosmograph Daytona in 18 ct white gold, with a bright black and steel dial

This Oyster Perpetual Cosmograph Daytona in 18 ct white gold, with a bright black and steel dial and an Oyster bracelet, features an 18 ct white gold bezel with an engraved tachymetric scale.

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.

This model features a bright black and steel dial with spray-coated counters, 18 ct 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.

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.

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.

Model Case

Type

• Oyster, 40 mm, white gold

Diameter

• 40 mm

Material

• White gold

Bezel

• Fixed, with engraved tachymetric scale, in 18 ct white gold

Oyster Architecture

• Monobloc middle case, screw-down case back and winding crown

Winding crown

• Screw-down, Twinlock double waterproofness system

Crystal

• Scratch-resistant sapphire, Cyclops lens over the date

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

• Oyster, three-piece solid links

Bracelet Material

• 18 ct white gold

Clasp

• Folding Oysterlock safety clasp with Rolex Glidelock extension system

Dial

Type

• Bright black and steel

Details

• Highly legible Chromalight display with long-lasting blue luminescence

Case reference 126509

Bracelet reference 78HA09