COSMOGRAPH DAYTONA Oyster, 40 mm, Oystersteel and yellow gold

• REFERENCE：116503
• MODEL CASE：Oyster, 40 mm, Oystersteel and yellow gold
• BEZEL：Fixed, with engraved tachymetric scale, in yellow gold
• WATER-RESISTANCE：Waterproof to 100 metres / 330 feet
• MOVEMENT：Perpetual, mechanical chronograph, self-winding
• CALIBRE：4130, Manufacture Rolex
• POWER RESERVE：Approximately 72 hours
• BRACELET：Oyster, flat three-piece links
• DIAL：White
• CERTIFICATION：Superlative Chronometer (COSC + Rolex certification after casing)

THE TACHYMETRIC SCALE

With its tachymetric scale, its three counters and its pushers, the Cosmograph Daytona was designed to be the ultimate timing tool for endurance racing drivers. The bezel features a tachymetric scale to read average speed over a given distance based on elapsed time. This scale offers optimal legibility, making the Cosmograph Daytona the ideal instrument for measuring speeds up to 400 units per hour, expressed in kilometres or miles.

WHITE DIAL

This model features a white dial with snailed counters, gold applique hour markers and hands with a Chromalight display, a highly-legible luminescent material. The central sweep seconds hand allows an accurate reading of 1/8 second, while the two counters on the dial display the lapsed time in hours and minutes. Drivers can accurately map out their track times and tactics without fail.

YELLOW ROLESOR

Gold is coveted for its lustre and nobility. Steel reinforces strength and reliability. Together, they harmoniously combine the best of their properties. A true Rolex signature, Rolesor has featured on Rolex models since the early 1930s, and was trademarked as a name in 1933. It is one of the prominent pillars of the Oyster collection.