Reference
126509
Model Case
Oyster, 40 mm, white gold
Water Resistance
Waterproof to 100 metres / 330 feet
Bezel
Fixed, with engraved tachymetric scale, in 18 ct white gold
Dial
Bright black and steel
Bracelet
Oyster, three-piece solid links
Movement
Perpetual, mechanical chronograph, self-winding
Calibre
4131, manufacture Rolex
Power Reserve
Approximately 72 hours
Certification
Superlative Chronometer (COSC + Rolex certification after casing)
Reference
126509
Bracelet
Oyster, three-piece solid links
Model Case
Oyster, 40 mm, white gold
Movement
Perpetual, mechanical chronograph, self-winding
Water Resistance
Waterproof to 100 metres / 330 feet
Calibre
4131, manufacture Rolex
Bezel
Fixed, with engraved tachymetric scale, in 18 ct white gold
Power Reserve
Approximately 72 hours
Dial
Bright black and steel
Certification
Superlative Chronometer (COSC + Rolex certification after casing)

The 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.

Bright black and steel dial

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.

18 ct white gold

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.
Rolex Gold Crown - Chang Ein Hong

Model Availability

All Rolex watches are assembled by hand with the utmost care to ensure exceptional quality. Such high standards naturally restrict Rolex production capacity and, at times, the demand for Rolex watches outpaces this capacity.

Therefore, the availability of certain models may be limited. New Rolex watches are exclusively sold by Official Rolex Retailers, who receive regular deliveries and independently manage the allocation and sales of watches to customers.

Chang Ein Hong is proud to be part of the worldwide network of Official Rolex Retailers and can provide information on the availability of Rolex watches.

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Rolex Boutique - Chang Ein Hong
Rolex Boutique - Chang Ein Hong

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Rolex Cosmograph Daytona

The triumph of endurance