Product of nickel-phosphorus, Additionally it is insensitive to magnetic fields. The movement is equipped with an optimized blue Parachrom hairspring, made by Rolex inside a paramagnetic alloy. The blue Parachrom hairspring is provided using a Rolex overcoil, ensuring the calibres regularity in almost any position. The oscillator is equipped on https://messiahnm05h.blog2learn.com/78236134/daydate-options