The moving head includes the light source and all of the inner workings and moves to change the location of the beam of light. It could separately control each RGB LED, Beam effect light colors-change unlimited rotation effect. The correct sound activation method: After selecting the sound activation, press the confirm button again. Youtube watch? v=VushKwcKlMs ,Manual sound activated operation video Warm reminder: This product is a delicate and precious commodity. If you find any transportation damage, please contact the transportation personnel in time