Rolex played a pioneering role in the development of special ceramics to create particular elements of its watch cases. Not only are these materials particularly scratch resistant, their colours are also of a rare intensity and are resistant to environmental effects. In addition, thanks to their chemical composition, the high-tech ceramics are inert and cannot corrode. The brand has developed exclusive expertise and innovative manufacturing methods that grant it complete independence in the production of these ceramic components.
The Cosmograph Daytona in 18 ct yellow gold with turquoise blue lacquer dial features a monobloc Cerachrom bezel in black ceramic. On the GMT‑Master II in 18 ct Everose gold with tiger iron dial, the bidirectional rotatable bezel is fitted with a two-colour, 24-hour graduated Cerachrom insert in brown and black ceramic.

The fluted bezel has been offered on many Classic models in the Oyster Perpetual collection since the invention of the Oyster case in 1926. Its fluting was originally used in screwing down the bezel against the middle case, thereby indirectly playing a part in waterproofness. Today, however, its role is mainly aesthetic. Exclusively made in 18 ct gold or in 950 platinum, the fluted bezel is the result of the brand’s unique expertise and one of the pillars of its stylistic heritage.
The fluted bezel of the Sky‑Dweller with bright green dial is fashioned from 18 ct yellow gold – the same material as its Oyster case and Jubilee bracelet.

A paragon of robustness, reliability and elegance, the Oyster case of the Cosmograph Daytona and GMT‑Master II – both 40 mm in diameter – as well as that of the Sky‑Dweller – 42 mm – is guaranteed waterproof to a depth of 100 metres (330 feet). The middle case of the versions presented is crafted from a solid block of 18 ct yellow or Everose gold. Both the Triplock winding crown, fitted with a triple waterproofness system and protected by an integral crown guard, and the Twinlock winding crown, with a double waterproofness system, screw down securely against the case, as do the chronograph pushers on the Cosmograph Daytona. The crystal – featuring a Cyclops lens at 3 o’clock for enhanced legibility on models with the date function – is made of virtually scratchproof sapphire and benefits from an anti-reflective coating.

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.

Like all Rolex watches, the Oyster Perpetual Cosmograph Daytona, Oyster Perpetual GMT‑Master II and Oyster Perpetual Sky‑Dweller are covered by the Superlative Chronometer certification redefined by Rolex in 2015. This designation testifies that every watch leaving the brand’s workshops has successfully undergone a series of tests conducted by Rolex in its own laboratories according to its own criteria, following the official certification of the movements by the Swiss Official Chronometer Testing Institute (COSC). These in-house certification tests apply to the fully assembled watch, after casing the movement, guaranteeing superlative performance on the wrist in terms of precision, power reserve, waterproofness and self-winding. The precision of a Rolex Superlative Chronometer is of the order of −2 /+2 seconds per day – the rate deviation tolerated by the brand for a finished watch is significantly smaller than that accepted by COSC for official certification of the movement alone.
The Superlative Chronometer status is symbolized by the green seal that comes with every Rolex watch and is coupled with an international five-year guarantee.