The DJ Special Effects Storm Thunder Sounds Lights Halloween Controller flashes your lights up to 1000 watts to the sound of thunder from a CD. Simply play the CD, plug your lights into the sound machine, and place it in front of your CD player. When the thunder is heard, your lights will flash in a synchronized fashion. It weighs 2.4 pounds and comes with the controller and CD and is compatible with mobile phones, CD, and MP3 players.