Made of nickel-phosphorus, It is additionally insensitive to magnetic fields. The movement is equipped with the optimized blue Parachrom hairspring, created by Rolex in the paramagnetic alloy. The blue Parachrom hairspring is equipped by using a Rolex overcoil, ensuring the calibres regularity in almost any place. The oscillator is fitted https://juliusg9505.blogdon.net/5-essential-elements-for-daydate-46405021