Cosmograph Daytona, Rolex Daytona 116508 Men Watch

Rolex Cosmograph Daytona: The chronograph functions

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.

Green Dial
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 Oyster bracelet
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.

4130 Movement
The Cosmograph Daytona is equipped with calibre 4130, a self-winding mechanical chronograph movement developed and manufactured by Rolex. Its architecture incorporates far fewer components than a standard chronograph, thereby enhancing the movement’s reliability. Like all Rolex Perpetual movements, the 4130 is a certified Swiss chronometer, a designation reserved for high-precision watches that have successfully passed the Swiss Official Chronometer Testing Institute (COSC) tests. The chronograph movement features a Parachrom hairspring, offering greater resistance to shocks and to temperature variations.

Start, Drive, Stop
The Daytona’s chronograph functions are activated by pushers that screw down like the winding crown when they are not in use, guaranteeing waterproofness to 100 metres. One press to start, stop or reset the chronograph produces a crisp, clear click that was perfected using the most advanced technology. Rolex watchmakers also perfected the mechanism to suit the ideal finger pressure on the pushers, and engineered it to provide an instantaneous and accurate start to the timing without sacrificing reliability.

Model Case

Model case

  • Oyster, 40 mm, yellow gold

Oyster architecture

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

Diameter

  • 40 mm

Material

  • 18 ct yellow gold

Bezel

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

Winding crown

  • Screw-down, Triplock triple waterproofness system

Crystal

  • Scratch-resistant sapphire

Water-resistance

  • Waterproof to 100 metres / 330 feet

Movement

Movement

  • Perpetual, mechanical chronograph, self-winding

Calibre

  • 4130, Manufacture Rolex

Precision

  • -2/+2 sec/day, after casing

Functions

  • Centre hour, minute and seconds hands, small seconds hand at 6 o’clock. Chronograph (centre hand) accurate to within 1/8 of a second, 30-minute counter at 3 o’clock and 12-hour counter at 9 o’clock. Stop seconds for precise time setting

Oscillator

  • Paramagnetic blue Parachrom hairspring

Winding

  • Bidirectional self-winding via Perpetual rotor

Power reserve

  • Approximately 72 hours

Bracelet

Bracelet
Oyster, flat three-piece links

Bracelet material
18 ct yellow gold

Clasp
Folding Oysterlock safety clasp with Easylink 5 mm comfort extension link

Dial

Dial
Green

Details
Highly legible Chromalight display with long-lasting blue luminescence

Certification
Superlative Chronometer (COSC + Rolex certification after casing)