Nikken introduced a revolution (literally) with Magnetic Biaxial Rotation - the patented discovery that shifts magnetic polarity up to 25 times per second, to create a dynamic magnetic field. The new, 1,800-gauss Biaxial PowerMag takes this technology to a new level. Advanced ergonomics make it comfortable for use at any time. The power and speed controls are placed within easy reach. Its electronics and mechanical components maximize efficiency and ruggedness. The field strength is optimized by a design feature that places the active component as closely as possible to the surface. PowerMags built-in simplicity conserves electric power to extend battery life. The Biaxial PowerMag can be operated with four AA batteries (not included) or on household current with an AC adapter. Many people suffer from body pain, arthritis, knee pain and are looking for relief. Many in the wellness industry are recommending Nikken magnetic field therapy products as a way to reduce pain and support healing.