Description

Behind the legendary design of the Cosmograph Daytona lies a modern story of Swiss watchmaking. Initially equipped with Valjoux movements, in 1988 the Cosmograph Daytona was fitted with calibre 4030, an adaptation of the Zenith El Primero calibre, the world’s first high-frequency self-winding chronograph movement. Rolex engineers worked to optimize this calibre – by reducing its frequency to 4 Hz – to guarantee its robustness and reliability over time. In 2000, the presentation of the Rolex 4130 calibre (which became the 4131 in 2023, or the 4132 on some special versions of the model) perpetuated the quest for excellence initiated by the brand’s founder, Hans Wilsdorf. Developed and produced by Rolex, it has proven to be particularly reliable and durable under even the most challenging conditions.