Great unit from ProgramSistem (PSL)! This is the Skorpion Color Change Version. There are 3 versions of this unit. There is a static unit (no motion), color change version (this one) and a sound active color change version. This unit features a central 120 volt, 500 watt linear bulb that sits in the center of the unit. There is a large dish that contains 3 different large colored pieces of glass (blue, yellow and red). The glass rotates around the bulb creating 5 large 'Fan or Blades' of light that shoot out of the front of the unit. The colors change as the glass moves around the lamp. Currently it is only 1 circuit but I am going to separate the motor from the lamp so the motor can be controlled separately. Unit is fan cooled and built very well. Made in Italy.