A practical jokers dream! Choose from 7 annoying sounds. (Cat meow, cell phone, mosquito, beeper, water drips, phone off hook or cricket) Product 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 have range of over 100 feet and can even go through walls. This is the latest novelty from the makers of the Remote Fart Machine. Requires 4 "AAA" batteries that are included. Let the fun begin!