Diomedics Pain-X, Model 500

This hand-held light therapy unit has five diodes: three infrared, which stimulates deep tissue; one red, for tissues and cells closer to the surface; and one green, designed to support the bio-electromagnetic field that surrounds the body. Useful for soft-tissue injuries, arthritis and other joint problems; and for reducing pain. The Pain-X has FDA clearance for minor muscle and joint aches and pains, as well as for muscle relaxation. Operates on three AAA batteries (included). Dimensions 4 1/2" x 1"; treatment area .44 square inches. Comes with 66-page booklet and carry case.