Lightahead LA005 Rotating LED Strobe Bulb Multi changing Color Crystal Stage Light Fascinating Rotating LED Crystal Led Bulb Your Personal & Private Disco Unmatched High Quality safe and reliable product from the leaders in LED lights From Lightahead Known for Its High Quality Branded Products. Made of Plastic. Easy to install in any light socket or lamp Multi-Color Lights Change Automatically. Has a slight whirring sound of motor.Ideal for home party's ,disco, Bar's ,Club's ,stage and even children's rooms. 3-1W LED 1.) Make sure the bulb is plugged firmly into the socket 2.) The socket must not be connected with an extension cord for best experience.3.) If the bulb does not rotate please remove and re-insert into the socket to make sure it is firm and place well into the base.