This Oyster Perpetual Cosmograph Daytona in 18 ct Everose gold, with a Sundust and bright black dial and an Oysterflex bracelet, features a black Cerachrom bezel with tachymetric scale.

The 18 ct gold versions of the Cosmograph Daytona with a Cerachrom bezel are available with an Oysterflex bracelet. Developed by Rolex and patented, it singularly combines the robustness of a metal bracelet with the comfort of an elastomer bracelet. It is made up of two flexible curved metal blades – one in each bracelet section – overmoulded with high-performance black elastomer. For optimum comfort, the Oysterflex bracelet is equipped with cushions on its inner sides and an Oysterlock safety clasp to prevent accidental opening. Its length may be adjusted via the ingenious Rolex Glidelock extension system.

To preserve the beauty of its pink gold watches, Rolex created and patented an exclusive 18 ct pink gold alloy cast in its own foundry: Everose gold. Introduced in 2005, 18 ct Everose is used on all Rolex Oyster models in pink gold.

This model features a Sundust and bright black dial with snailed counters, 18 ct gold applique hour markers and hands with a Chromalight display, a highly-legible luminescent material. The dial allows drivers to accurately map out their track times and tactics without fail.

A key part of the model’s identity is the bezel moulded with a tachymetric scale for measuring average speeds of up to 400 miles or kilometres per hour. Blending high technology with sleek aesthetics, the black bezel is reminiscent of the 1965 model that was fitted with a black Plexiglas bezel insert. The monobloc Cerachrom bezel in high-tech ceramic offers a number of advantages: it is corrosion resistant, virtually scratchproof and the colour is unaffected by UV rays. This extremely durable bezel also offers an exceptionally legible tachymetric scale, thanks to the deposition of a thin layer of platinum in the numerals and graduations via a PVD (Physical Vapour Deposition) process. The monobloc Cerachrom bezel is made in a single piece and holds the crystal firmly in place on the middle case, ensuring waterproofness.

The new-generation Cosmograph Daytona is equipped with calibre 4131, a chronograph movement unveiled this year, entirely developed and manufactured by Rolex. A distillation of technology, this self-winding mechanical movement delivers outstanding performance in terms of precision, power reserve, convenience and reliability. It incorporates a chronograph function with a reduced number of components, thereby also enhancing the movement’s reliability. It is engaged by a robust mechanism with a column wheel and vertical clutch, allowing an instantaneous and extremely precise start. The bridges of calibre 4131 feature a Rolex Côtes de Genève decoration, which differs from the traditional Côtes de Genève by the addition of a slight polished groove between each band.

Dial

• Dial : Sundust and bright black
• Details : Highly legible Chromalight display with long-lasting blue luminescence

Case

• Case : Oyster, 40 mm, Everose gold
• Oyster architecture : Monobloc middle case, screw-down case back and winding crown
• Diameter : 40 mm
• Material : 18 ct Everose gold
• 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

• Movement : Perpetual, mechanical chronograph, self-winding
• Calibre : 4131, manufacture Rolex
• Precision : -2/+2 sec/day, after casing
• Certification : Superlative Chronometer (COSC + Rolex certification 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

• Bracelet : Oysterflex
• Material : Flexible metal blades overmoulded with high-performance elastomer
• Clasp : Folding Oysterlock safety clasp with Rolex Glidelock extension system