Sound Activated LED DJ Flashing Green Equalizer EQ Speakers Panel with Sensor "Green Equalizer Speakers" EQ panel is sound activated, which lights up and flashes to music & sounds Can be placed anywhere possible: clubs, bars, restaurants, clothings, your own room, vehicles, and much more Can be turned on/off plus sound sensitivity can be adjusted to your desire Velcro applied on the back panel, just peel and stick Uses 2 x AAA batteries, not included