With this device, you can change the voice in several different modes. Use the buttons for selecting a mode and by using the potentiometer on the side of the device you can change the volume. Touch or stick to the phone on side of the device (the side with the round sticker) and talk on the other side. Works with 9V batteries, not included in the kit.
Device for changing voice
video Device for changing voice
Device for changing voice (ID: D22)