Command an amazing display of rainbow light with your touch or voice! On this flat panel disk is super bright plasma technology combined with miniature electronics. The result is a spectacular array of rainbow light which will respond to your touch, to your voice, or even dance to your favorite music. Incredibly bright lightning mysteriously dances inside a flat panel disk of fine quality glass less than a 1/2" thick Includes a sound sensitivity response control which creates a pulsating rhythm of light that will respond to music or voice for the ultimate audio-visual experience Looks great on a table top or desk, or display the Lumin Disk right on your wall with the built-in keyhole hanger Includes AC adapter, or make it portable with battery function