This is a complete portable system including a voice distortion unit, powered speakers and a radio remote microphone.
All neatly and safely encased in its own carrying box, ready to be used anywhere.
Just by talking normally into it you can be a squeaky little mouse, or a thunderous giant, make your voice echo around a cave or bounce off mountains.
You can be deep under water or an alien from some distant galaxy. It is wonderful for communication and dramatic effect.