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. The combined effects are useful for soft tissue injuries, arthritis and other joint problems; and for reducing pain. Rotating head allows placement exactly where you want it. Operates on 3 AAA batteries. Dimensions 5" x 1 1/2". Comes with booklet and carry bag.
This unit is officially sold for animal use due to the extensive costs of requirements to meet FDA clearances.