Made from nickel-phosphorus, It is usually insensitive to magnetic fields. The movement is equipped having an optimized blue Parachrom hairspring, created by Rolex inside of a paramagnetic alloy. The blue Parachrom hairspring is provided that has a Rolex overcoil, making sure the calibres regularity in almost any placement. The oscillator https://beckettl1d72.bloggip.com/30270380/daydate-for-dummies