An apparatus for the treatment of chronic pain, through the use of an electro-magnetic field generated by the device. The apparatus comprises a frame with a continuous side wall and a central passageway extending there through with a bar disposed in the central passageway. The bar extends from one side of the continuous side wall the other side. Four pairs of identical planar pole magnets are embedded in the frame, and wherein each pair comprises two magnets which can have a planar face disposed adjacent the other and separated by less than 1 inch. A central magnet encircles the bar and can be disposed at the intersection of the donut-shaped low gauss magnet field wherein a central magnet is used for forming a substantially focused magnetic field.