Made of nickel-phosphorus, It is additionally insensitive to magnetic fields. The movement is equipped with the optimized blue Parachrom hairspring, created by Rolex within a paramagnetic alloy. The blue Parachrom hairspring is equipped by using a Rolex overcoil, ensuring the calibres regularity in almost any position. The oscillator is equipped https://hector06v41.answerblogs.com/30413767/an-unbiased-view-of-daydate