Fun set of 8 Musical Jack O Lantern Lights on a String have inner LED lights that project Moving Faces singing their favorite song, Monster Mash! Each Jack O Lantern is approximately 3 inches tall x 3 inches x 3 inches. Battery-operated string of 8 Jack O Lanterns requires 3 AA Batteries, with a Try Me Button on the window display box. Constant On Mode and Sensor Mode activation. 7.87 feet lighted length of black wire to blend into the dark or black backgrounds. Great for a Funny Decoration with great music-Everyone will be delighted!