Manufactured from nickel-phosphorus, it is also insensitive to magnetic fields. The motion is fitted 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 to https://beau9y506.blogunteer.com/29533635/daydate-fundamentals-explained