Product of nickel-phosphorus, It is usually insensitive to magnetic fields. The movement is fitted using an optimized blue Parachrom hairspring, produced by Rolex in a paramagnetic alloy. The blue Parachrom hairspring is provided which has a Rolex overcoil, ensuring the calibres regularity in almost any situation. The oscillator is fitted https://zionq395m.newsbloger.com/30780008/how-daydate-can-save-you-time-stress-and-money