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THE ESSENCE OF THE OYSTER
Watches in the Oyster Perpetual range are direct descendants of the original Oyster, the world’s first waterproof wristwatch, on which Rolex has built its reputation since 1926. These watches benefit from all the fundamental features of the Oyster Perpetual collection – excellent chronometric precision, a waterproof Oyster case, and self-winding of the movement via a Perpetual rotor. Displaying hours, minutes and seconds, made exclusively of Oystersteel and featuring a sophisticated finish, these are chronometer wristwatches in their purest form.
THE OYSTER CASE, SYMBOL OF WATERPROOFNESS
A paragon of robustness and elegance, the Oyster case of the Oyster Perpetual 41 and Oyster Perpetual 36 is guaranteed waterproof to a depth of 100 metres (330 feet). Its middle case is crafted from a solid block of Oystersteel, a particularly corrosion-resistant alloy. The case back, edged with fine fluting, is hermetically screwed down with a special tool that allows only Rolex watchmakers to access the movement. The Twinlock winding crown, fitted with a double waterproofness system, screws down securely against the case. The crystal is made of virtually scratch-proof sapphire. The waterproof Oyster case provides optimum protection for the watch’s movement.
PERPETUAL CALIBRE 3230
The Oyster Perpetual 41 and the new versions of the Oyster Perpetual 36 are equipped with calibre 3230, a movement entirely developed and manufactured by Rolex, launched by the brand this year. At the forefront of watchmaking technology, this self-winding mechanical movement led to the filing of several patents, and offers fundamental gains in terms of precision, power reserve, resistance to shocks and magnetic fields, convenience and reliability.
Calibre 3230 incorporates the Chronergy escapement patented by Rolex, which combines high energy efficiency with great dependability. Made of nickel-phosphorus, it is also insensitive to magnetic fields. The movement is fitted with an optimized blue Parachrom hairspring, manufactured by Rolex in an exclusive paramagnetic alloy that makes it up to 10 times more precise than a traditional hairspring in case of shocks. The blue Parachrom hairspring is equipped with a Rolex overcoil, ensuring the calibre’s regularity in any position. The oscillator is fitted on the Rolex-designed and -patented high-performance Paraflex shock absorbers, increasing the movement’s shock resistance.
Calibre 3230 is equipped with a self-winding module via a Perpetual rotor. Thanks to its barrel architecture and the escapement’s superior efficiency, its power reserve extends to approximately 70 hours.