As with all Rolexes, the Milgauss was designed for a purpose - to solve a problem. The first Rolex Milgauss ref. 6451 - an antimagnetic watch - was designed for professionals who worked in power plants, medical facilities, and research labs. An electromagnetic field greater than 50 to 100 gauss would disrupt the timing of a watch. The Milgauss resists magnetic fields up to 1,000 gauss. The Milgauss ref. 1019 was released in the 1960s but discontinued in 1988 at which time the Milgauss seemed to be forgotten until 2007. Everest Bands on this page fit the Milgauss ref. 116400, a reference released nearly 20 years after its predecessor.