Manufactured from nickel-phosphorus, it is also insensitive to magnetic fields. The motion is fitted by having an optimized blue Parachrom hairspring, produced by Rolex inside of a paramagnetic alloy. The blue Parachrom hairspring is supplied with a Rolex overcoil, guaranteeing the calibres regularity in any situation. The oscillator is fitted https://archers4i94.alltdesign.com/detailed-notes-on-daydate-49942753