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Model case

Crystal

Scratch-resistant sapphire

Water-resistance

Waterproof to 100 metres / 330 feet

Model case

Oyster, 40 mm, steel and yellow gold

Bezel

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

Diameter

40 mm

Winding crown

Screw-down, Triplock triple waterproofness system

Oyster architecture

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

Material

Yellow Rolesor - combination of 904L steel and 18 ct yellow gold

Movement

Calibre

4130, Manufacture Rolex

Model case

Perpetual, mechanical chronograph, self-winding

Oscillator

Paramagnetic blue Parachrom hairspring

Winding

Bidirectional self-winding via Perpetual rotor

Precision

Officially certified Swiss chronometer (COSC)

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

Bracelet

Clasp

Folding Oysterlock safety clasp with Easylink 5 mm comfort extension link

Bracelet material

Yellow Rolesor - combination of 904L steel and 18 ct yellow gold

Bracelet

Oyster, flat three-piece links

Dial

Details

White dial with snailed yellow gold small counters

Dial

White

The Cosmograph Daytona, introduced in 1963, was designed to meet the demands of professional racing drivers. With its highly reliable chronograph and bezel with tachymetric scale, it allows drivers to perfectly measure average speeds up to 400 kilometres or miles per hour, as they choose. An icon eternally joined in name and function to the high-performance world of motor sport.