This could possibly be the funniest invention ever. You can now fart anywhere and at anytime. Our Fart Machine has 15 different fart sounds ranging from innocent (whoops, was that me?) to downright disgusting (Oh my God!). It has 2 pieces, the remote transmitter (similar in size to a car alarm remote) and the speaker unit (approx. 5" tall w/ 3" speaker). Radio transmitter and receiver has range of 100 feet and can even go through walls. Requires one 9 volt battery. (not included)