This Oyster Perpetual Cosmograph Daytona in 18 ct white gold, with a steel, diamond-set dial and contrasting counter rings, features an Oysterflex bracelet as well as a diamond-set bezel and diamond-set lugs.

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.

By operating its own exclusive foundry, Rolex has the unrivalled ability to cast the highest quality 18 ct gold alloys. According to the proportion of silver, copper, platinum or palladium added, different types of 18 ct gold are obtained: yellow, pink or white. They are made with only the purest metals and meticulously inspected in an in-house laboratory with state-of-the-art equipment, before the gold is formed and shaped with the same painstaking attention to quality. Rolex's commitment to excellence begins at the source.

This model features a steel, diamond-set 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.

The timepiece incorporates a bezel adorned with 36 trapeze-cut diamonds. This now legendary chronograph is the instrument of choice for measuring time intervals and determining average speeds. On this gem-set version, the emblematic tachymetric scale is replaced with diamonds.

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 : Steel, bright black counter rings set with diamonds
• Gem settings : 8 baguette-cut diamond-set hour markers, 3 diamond-set hour markers at 3, 6 and 9 o'clock.
• Details : Highly legible Chromalight display with long-lasting blue luminescence

Case

• Case : Oyster, 40 mm, white gold and diamonds
• Oyster architecture : Monobloc middle case, screw-down case back and winding crown
• Diameter : 40 mm
• Material : 18 ct white gold with lugs set with diamonds
• Bezel : Set with diamonds
• 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