The first version, fitted on an Oysterflex bracelet, features a dial in white mother-of-pearl with chronograph counters in black mother-of-pearl. The colour combination is reversed on the second watch, which has an Oyster bracelet and a black mother-of-pearl dial with white mother-of-pearl counters. This design called for the creation of a specific and technically demanding manufacturing process.
The Cosmograph Daytona is equipped with calibre 4131, entirely developed and manufactured by Rolex, which features bridges decorated with Rolex Côtes de Genève and a cut-out oscillating weight. Calibre 4131 enables the Cosmograph Daytona to measure intervals of time via the chronograph function, in addition to displaying the hours, minutes and seconds.
Launched in 1963, the Cosmograph Daytona was designed to meet the needs of professional racing drivers. This now legendary chronograph is the instrument of choice for measuring time intervals and determining average speeds. Over the course of its history, it has appeared in gem-set versions on which the emblematic tachymetric scale is replaced with diamonds or coloured precious stones.
The two new timepieces are fitted with a bracelet to match the colour of the counters: an Oysterflex bracelet for the watch with black counters and an Oyster bracelet for the version with white counters.
Developed by Rolex and patented, the Oysterflex bracelet is made up of two flexible, curved metal blades – one for each of the sections – overmoulded with high-performance black elastomer.
The Oyster bracelet, developed at the end of the 1930s, is a three-piece link metal bracelet known for its robustness; it remains the most universal in the Oyster Perpetual collection.