Fabricated from nickel-phosphorus, it is also insensitive to magnetic fields. The movement is fitted by having an optimized blue Parachrom hairspring, made by Rolex in a very paramagnetic alloy. The blue Parachrom hairspring is supplied using a Rolex overcoil, making certain the calibres regularity in almost any position. The oscillator https://hector06v41.answerblogs.com/30413767/an-unbiased-view-of-daydate