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

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

Precision

Officially certified Swiss chronometer (COSC)

Oscillator

Paramagnetic blue Parachrom hairspring

Winding

Bidirectional self-winding via Perpetual rotor

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

Black set with diamonds

Details

Dial with snailed small counters

Gem-setting

Diamonds in 18 ct gold settings

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.