Rolex Cosmograph Daytona
Image © Rolex SA, from rolex.com. Used for editorial showcase.

Rolex

Cosmograph Daytona

A 40 mm steel chronograph with a tachymeter bezel, white dial and black counters.

The Daytona came out in 1963 and is named after the racetrack in Florida. It is a chronograph: it times events up to 12 hours using the two counters on the dial.

The scale on the bezel is a tachymeter. Start the chronograph at one marker, stop it at the next one a kilometre or mile later, and the seconds hand points to your average speed.

Reference 126500LN was released in 2023 with calibre 4131. The white dial and black ceramic bezel are the combination most people picture.

Reference
126500LN
Introduced
1963
Case
40 mm, Oystersteel
Movement
Calibre 4131, self-winding chronograph
Power reserve
About 72 hours
Water resistance
100 m
Notable
Tachymetric scale on a black Cerachrom bezel

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