CALIBRE 7140
The 1908 is driven by calibre 7140, a movement entirely developed and manufactured by Rolex that was released in 2023 for the launch of this model, which it exclusively equips. A distillation of technology, this self-winding mechanical movement delivers outstanding performance, particularly in terms of precision, power reserve, convenience and reliability. Calibre 7140 demonstrates carefully finished aesthetics, notably on the bridges, which feature Rolex Côtes de Genève – a decoration that differs from traditional Côtes de Genève for the slight polished groove between each band.
Calibre 7140 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 also includes the patented Syloxi hairspring, produced by Rolex. This silicon hairspring has a patented geometry that ensures the calibre’s regularity in any position. The oscillator is mounted on the patented high-performance Paraflex shock absorbers, designed by the brand, which increase the movement’s shock resistance. The oscillating weight is fashioned in yellow gold and cut out. It is, furthermore, fitted with an optimized ball bearing.
Calibre 7140 is equipped with a self-winding system via a Perpetual rotor. Thanks to its barrel architecture and the escapement’s superior efficiency, the power reserve of this movement extends to approximately 66 hours.