These outstanding new necklaces are made in stainless steel and are 20 inches long (500mm). The necklaces have a 2000 gauss (200 mTesla) rare earth (neodymium) magnet in every link. The inside of the necklaces has a special electro-plated coating which dramatically improves the active life of these lavish necklaces. Magnetic necklaces are ideal for the high-stress areas of the neck and shoulders. The necklace comes in a magnetic E.box with full instructions. A remarkable addition to our Premier Collection. Special contoured design for comfort and beauty.