Product of nickel-phosphorus, Additionally it is insensitive to magnetic fields. The movement is equipped with an optimized blue Parachrom hairspring, created by Rolex within a paramagnetic alloy. The blue Parachrom hairspring is provided by using a Rolex overcoil, ensuring the calibres regularity in almost any place. The oscillator is equipped https://landen0l2i0.thezenweb.com/little-known-facts-about-daydate-68073362