Enhance your costume with this! This voice changer is portable and includes 3 voice settings, microphone with clip to be able to attach it to your mask or costume, a belt clip and a self-lock strip. Measures approximately 3" wide x 5" high x 1.5" deep. Requires 3 - "AA" batteries (not included). 3 voice settings are: Scary Monster, High Alien, and Amplify your own voice.