The Rolex Milgauss is a special mens watch designed to be resistant to a magnetic flux density of 1,000 gauss (1000=Mille, and thats why the watch is named Milgauss) this means it will continue to keep precision time in highly magnetic environments. It is has a very unique seconds hand that is similar to a lightning bolt. The watch case, bezel, and center links are high polish. Utilizing Rolex’s 3131 caliber in-house movement and is C.O.S.C. certified. A very unique and classy timepiece, I believe a must have for any Rolex collector.