These cinema light boxes will be the hit of your party. With 82 letters and symbols you can create multiple messages to be up in lights! Each measures 4 1/8" H x 6" W X 1 1/2" D with your choice of black, white, red, lime, green and blue borders. The power source is 4 AAA batteries which are included. The light box can be mounted and has an on/off switch on the side.