Manufactured from nickel-phosphorus, it is also insensitive to magnetic fields. The motion is fitted having an optimized blue Parachrom hairspring, produced by Rolex in a paramagnetic alloy. The blue Parachrom hairspring is supplied using a Rolex overcoil, making sure the calibres regularity in any position. The oscillator is equipped on https://johnny8z594.uzblog.net/daydate-fundamentals-explained-44339321