Rolex Cosmograph Daytona

Model case
Oyster, 40 mm, Oystersteel

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

Diameter
40 mm

Material
Oystersteel

Bezel
Black monobloc Cerachrom bezel in ceramic with moulded tachymetric scale

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

Functions
Centre hour and minute hands, small seconds hand at 6 o'clock. Chronograph via centre seconds hand, 30-minute counter at 3 o'clock and 12-hour counter at 9 o'clock. Stop seconds for exact time setting

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

Material
Oystersteel

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

Dial
Black, black counter rings

Details
Highly legible Chromalight display with long-lasting blue luminescence