REFERENCE
126509
MODEL CASE
Oyster, 40 mm, white gold
OYSTER ARCHITECTURE
Monobloc middle case, screw-down case back and winding crown
DIAMETER
40 mm
MATERIAL
18 ct white gold
BEZEL
Fixed, with engraved tachymetric scale, in 18 ct white 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
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
BRACELET MATERIAL
18 ct white gold
CLASP
Folding Oysterlock safety clasp with Easylink 5 mm comfort extension link
DIAL
Bright black and steel
DETAILS
Highly legible Chromalight display with long-lasting blue luminescence
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
This model features a bright black and steel dial with snailed counters, 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.
18 ct white gold
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.
REFERENCE
126509
MODEL CASE
Oyster, 40 mm, white gold
OYSTER ARCHITECTURE
Monobloc middle case, screw-down case back and winding crown
DIAMETER
40 mm
MATERIAL
18 ct white gold
BEZEL
Fixed, with engraved tachymetric scale, in 18 ct white 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
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
BRACELET MATERIAL
18 ct white gold
CLASP
Folding Oysterlock safety clasp with Easylink 5 mm comfort extension link
DIAL
Bright black and steel
DETAILS
Highly legible Chromalight display with long-lasting blue luminescence
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
This model features a bright black and steel dial with snailed counters, 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.
18 ct white gold
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.
