Fabricated from nickel-phosphorus, It is usually insensitive to magnetic fields. The movement is fitted by having an optimized blue Parachrom hairspring, manufactured by Rolex within a paramagnetic alloy. The blue Parachrom hairspring is provided with a Rolex overcoil, making certain the calibres regularity in almost any posture. The oscillator is https://mario740zy.mybloglicious.com/51216615/how-daydate-can-save-you-time-stress-and-money