Cosmograph Daytona

CASE

Type 

Oyster (monobloc middle case, screw-down case back, winding crown and chronograph pushers) 

Diameter 

40 mm 

Material 

18 ct yellow gold, polished and satin finish 

Bezel 

Monobloc Cerachrom in
black ceramic, engraved tachymetric scale coated with yellow gold
via magnetron sputtering

Case back 

Screw-down with Rolex fluting 

Winding crown 

Screw-down, Triplock triple waterproofness system 

Crown guard 

Integral part of the middle case 

Crystal 

Scratch-resistant sapphire 

Waterproofness 

100 metres (330 feet) 


MOVEMENT

Calibre 

4130, Manufacture Rolex
Mechanical chronograph movement with column wheel and vertical clutch Bidirectional self-winding
via Perpetual rotor

Precision 

−2/+2 sec/day, after casing 

Functions 

Centre hour and minute 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 

Frequency: 28,800 beats/hour (4 Hz) Paramagnetic blue Parachrom hairspring Rolex overcoil
Large balance wheel with variable inertia High-precision regulating via four

gold Microstella nuts Traversing balance bridge 

Jewelling 

44 rubies 

Power reserve 

Approximately 72 hours 


DIAL

Colour 

Champagne, sunray finish, black snailed counters 

Hour markers 

Highly legible Chromalight appliques (long-lasting luminescence)
in 18 ct yellow gold with black PVD coating

Hands 

18 ct yellow gold, Chromalight 

B R A C E L E T 

Type 

Oysterflex 

Material 

Flexible metal blades overmoulded with high-performance elastomer 

Clasp 

Oysterlock folding safety clasp
in 18 ct yellow gold
Easylink 5 mm comfort extension link 

 


ROLEX COSMOGRAPH DAYTONA

Available at these authorized dealers the Greater Toronto Area