Creates an array of 78 multi-colored beams that crisscross sound actively via its internal microphone. The E-143 has an onboard sensetivity knob on the rear of the unit, allowing you to make proper adjustments. This unit is powered by 3x 120V-100W (EL-100) Lamp. Dimensions: 10.5”D x 8W” x 8”H. Weight: 10 Lbs.