The Matrix Rainbow Meridian LED Laser therapy device features multi-colored light emitting diodes with a variety of frequency sets; plus infrared, super pulsed infrareds, and red laser diodes. The development of this device was inspired by color therapy and therapeutic frequencies to trigger healing reactions in the body. It has features and functions unlike any previous light therapy device! Select from ten programs of energetic sequences that include the fourteen primary Chinese Meridians, Nogier, Solfeggio, Dr. Wing frequencies and more. The five piece light kit includes the controller, light pad, and three light pens for a wide variety of treatment options! Incredibly easy to use.