YeaFly - 2x Bald Eagle American Flag US Flag Patriot Wireless Drill Free Easy Install Car Door LED Projector Courtesy Welcome Logo Ghost Shadow Light Magnet Sensor Power Supply: 3 x AAA battery (Not Included) Installation: Wireless Design. No drill installation needed. Keep door panel clean and dry before attach. Turn ON/OFF: Hall sensor with magnet auto-control or it can be manually controlled Main Size:2.6" x 2.5" x 0.75",Material:ABS,Working voltage:4.5v; WARNING:Product might NOT stick on some cars due to interior. Please let us know for help.