These movements involve the blue Parachrom hairspring, produced by Rolex inside of a paramagnetic alloy. Besides resisting strong magnetic fields, this hairspring presents excellent security during the deal with of temperature variations together with higher resistance to shocks. It is supplied that has a Rolex overcoil, ensuring the calibres’ regularity https://boydenver52.wixsite.com/impalaspareparts/post/luxury-watches-online-for-men