Velleman MK171 Voice Changer
Brand: Velleman

Great for parties, recordings, bands, and even prank phone calls, this voice changer makes your voice sound like a robot and can also add a vibrato effect to your voice. Pitch buttons make your voice sound lower or higher. Features a built-in microphone and power amplifier with volume control. Requires 9V battery and speaker(not included).

make your voice sound like a robot
add vibrato effect
use the 'pitch'-buttons and make your voice sound lower or higher
built-in microphone and power amplifier with volume control just add a speaker
hours of fun!