Parachrom
Hairspring developed, patented and manufactured by Rolex in an exclusive alloy which has the advantage of being paramagnetic, offering great stability to temperature variations and remaining up to 10 times more accurate in case of shocks than a traditional hairspring, It thereby enhances the movement's chronometric performance. Shock absorbers developed and patented by Rolex which increase the shock-resistance of sensitive movement components, notably the balance staff, by up to 50%.