This pair of rotating LED light is great decoration for car, motorcycle, or business to catch customer's attention. It has few different mode that it will change automatic this including flashing, rotating light and blinking. To view a video how these LED LIghts work please go the link below: youtube.com/watch?v=RONeYJAo2Pk These are the specification of these LED lights This operate at standard 12v It operate at 2w to 5w. comes in pair of LED Light easy installation with self stick stick in back. Package content: 2PCS colorful LED rotating light. 12V 2A AC adapter (optional) All LED strip light will be tested before shipping to ensure quality and functionality we also do wholesale, please E-mail us for volume pricing. Local pick up is always welcome! We are conveniently located at: SIGMA COMPUTER 5220 S PULASKI RD SUITE 238 CHICAGO, IL 60632 773-581-9083 ledupdates.com