These movements contain the blue Parachrom hairspring, produced by Rolex in the paramagnetic alloy. Together with resisting solid magnetic fields, this hairspring delivers fantastic balance from the experience of temperature variations and high resistance to shocks. It is supplied having a Rolex overcoil, guaranteeing the calibres’ regularity in any position. https://boydenver52.wixsite.com/impalaspareparts/post/luxury-watches-online-for-men