Things are just more fun when they glow in the dark, so be sure to have your Battery-Operated Black Light handy at all times. The Battery-Operated Black Light is 5 1/2" long and has a black light bulb and is a must-have for anyone looking to have an impromptu dance party. Our Battery-Operated Black Light is individually boxed and perfect for a gift or party favor. Please order our handheld black light by the individual piece. Requires (4) AA batteries that are NOT included.