Parachrom hairspring
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Oscillator
Development of Rolex
see also: Breguet spring
In a mechanical watch, the oscillator is the guardian of time. Comprising a hairspring and a balance wheel, this regulating organ determines the precision of the watch by the regularity of its oscillations. Rolex deploys exceptional know-how and resources to master the design and production of this strategic couple.
After five years of research, Rolex created and patented the blue Parachrom hairspring. Crafted from a paramagnetic alloy, it is unaffected by magnetic fields and up to 10 times more resilient to shocks than traditional hairsprings. Historically, the unique blue colour of the hairspring has been a sign of prestige reserved for only the most accurate timepieces.[1]