daydate No Further a Mystery
Made from nickel-phosphorus, it is also insensitive to magnetic fields. The motion is fitted by having an optimized blue Parachrom hairspring, produced by Rolex in a paramagnetic alloy. The blue Parachrom hairspring is supplied having a Rolex overcoil, making sure the calibres regularity in any posture. The oscillator is fitted over the Rolex-made,