Abco Tech E27 Full Color Rotating Lamp Strobe LED Crystal Stage Light for Disco Party Club Bar Dj . Ball Bulb Multi Color Changing 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. Make sure the bulb is plugged firmly into the socket. The socket must not be connected with an extension cord for best experience. 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.