Made of nickel-phosphorus, It is additionally insensitive to magnetic fields. The movement is equipped with the optimized blue Parachrom hairspring, manufactured by Rolex in the paramagnetic alloy. The blue Parachrom hairspring is provided by using a Rolex overcoil, ensuring the calibres regularity in almost any position. The oscillator is equipped https://gregory1d6jd.blogocial.com/not-known-factual-statements-about-daydate-66206039