PERPETUAL CALIBRES 2232 AND 3230
The Oyster Perpetual 31 is equipped with calibre 2232; the Oyster Perpetual 36 and the Oyster Perpetual 41 with calibre 3230. These movements, entirely developed and manufactured by Rolex, were both unveiled in 2020 and introduced to these models the same year. A distillation of technology, these self-winding mechanical movements deliver outstanding performance in terms of precision, power reserve, convenience and reliability.
Calibre 2232 is fitted with a Syloxi hairspring that is produced by Rolex and patented. This silicon hairspring has a patented geometry that ensures the calibre’s regularity in any position. The movement also contains a paramagnetic nickel-phosphorus escape wheel.
Calibre 3230 incorporates the patented Chronergy escapement, which combines high energy efficiency with great dependability. Made of nickel-phosphorus, this escapement is resistant to strong magnetic fields. The movement is fitted with a blue Parachrom hairspring, manufactured by the brand in a paramagnetic alloy. The hairspring offers great stability in the face of temperature variations as well as high resistance to shocks. It is equipped with a Rolex overcoil, ensuring the calibre’s regularity in any position. The oscillating weight is now fitted with an optimized ball bearing.
The oscillator of these two calibres is mounted on the Rolex-designed, patented high-performance Paraflex shock absorbers, increasing the movements’ shock resistance.
Calibres 2232 and 3230 are equipped with a self-winding system via a Perpetual rotor. The first offers a power reserve of approximately 55 hours. For the second, the power reserve extends to approximately 70 hours, thanks to its barrel architecture and the escapement’s superior efficiency.
The new variants in the Oyster Perpetual range are fitted on an Oyster bracelet. Developed at the end of the 1930s, this three-piece link bracelet remains the most universal in the Oyster Perpetual collection and is known for its robustness.
Made of Oystersteel, the Oyster bracelet of these new variants is equipped with a folding Oysterclasp and the Easylink comfort extension link – developed by Rolex – that allows the wearer to easily adjust the bracelet length by approximately 5 mm.
SUPERLATIVE CHRONOMETER CERTIFICATION
Like all Rolex watches, the Oyster Perpetual 31, Oyster Perpetual 36 and Oyster Perpetual 41 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). The 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.