Calibres 4131, 3285 and 9002
The Cosmograph Daytona, GMT-Master II and Sky-Dweller are driven by self-winding mechanical movements entirely developed and manufactured by Rolex. A distillation of technology, they deliver outstanding performance, particularly in terms
of precision, power reserve, convenience and reliability.
The Cosmograph Daytona is equipped with calibre 4131, which enables the watch to measure intervals of time via the chronograph function, in addition to displaying the hours, minutes and seconds. Calibre 4131 demonstrates carefully finished
aesthetics, including bridges decorated with Rolex Côtes de Genève and a cut-out oscillating weight.
The GMT-Master II has been fitted with calibre 3285 since the movement’s introduction in 2018. It provides the model with the date function and an additional time zone in 24-hour format, as well as the hours, minutes and seconds.
The Sky-Dweller is powered by calibre 9002, furnishing the watch with an annual calendar – date and month – and an additional time zone in 24-hour format, together with the hours, minutes and seconds. Introduced in 2023, calibre 9002 is
exclusive to this model.
Calibre 4131, calibre 3285 and calibre 9002 are equipped with a self-winding system via a Perpetual rotor. Thanks to their barrel architecture and the superior efficiency of their escapement, the power reserve of these movements extends
to approximately 72 hours, 70 hours and 72 hours respectively.