CALIBRE 3235, A SUPERLATIVE CHRONOMETER
Datejust Pearlmaster 39
The new Datejust Pearlmaster is equipped with a new‑generation movement, calibre 3235, entirely developed and manufactured by Rolex for a superlative level of performance. Certified as a Swiss chronometer by COSC (Swiss Official Chronometer Testing Institute), it is tested a second time by Rolex after being cased to ensure that in everyday use it satisfies Rolex’s criteria for precision, which are twice as exacting as those for an officially certified chronometer. This control of the final precision of the assembled watch is carried out using a methodology and high-technology equipment specially developed by Rolex.
This new self-winding mechanical movement is at the forefront of the art of watchmaking. A consummate demonstration of Rolex technology with 14 patents, it offers fundamental gains in terms of precision, power reserve, resistance to shocks and magnetism, ease of use and reliability. It incorporates the new Chronergy escapement patented by Rolex, which combines high energy efficiency with great dependability. Made of nickel‑phosphorus, it is also insensitive to magnetic interferences. The oscillator, the true heart of the watch, has an optimized blue Parachrom hairspring. Patented and manufactured by Rolex in an exclusive paramagnetic alloy, it is also up to 10 times more precise than a traditional hairspring in case of shocks. Thanks to a new barrel architecture and the escapement’s superior efficiency, the power reserve of calibre 3235 extends to approximately 70 hours.
