The Batman Symbol Belt Buckle w/Speaker measures 4.5 inches wide by 3 inches high and features the always-loved Batman symbol. Now, brace yourself, the Batman Symbol Belt Buckle w/Speaker is not only a belt buckle...but a speaker as well! There is some kind of foul magic afoot from what I can tell. Grey bodied and requiring 2 triple A batteries, the Batman Symbol Belt Buckle w/Speaker is compatible with anything with a headphone jack; this includes all of those fancy smart phones and I-Products. Now you can listen to the 1960s Batman theme song all of the time.