Now you can answer the telephone without anyone recognizing your voice. Press a button and completely change your voice. There are 8 different voice changing settings. A man can sound like a stranger, a women like a man, or a grand-dad like a child. Travels any where, measures 5" x 3" x 1/2". Voice changer II operates on 3 AA batteries (not included) and includes handset connector cable. Will not work on cordless phone handset connector cable. Does Not work with Magic Jack.