This is a bullet style IR Dummy Camera. It has a constant flashing red LED light. It's realistic looking can be mounted just about anywhere. It has an easy adjusting bracket so it sets up in minutes. The batteries are easy to change by just sliding the sun shade off and inserting 2 AA batteries (AA Batteries Not Included). Specifications: Measures 6 11/16" x 8 1/4" x 3 1/8"