The Pyle PMP32GR Megaphone is a compact and portable 30-watt speaker that offers powerful Pa sound projection. It features two modes: Voice Talking to amplify your voice and Siren Alert for emergency use. The megaphone has an adjustable volume control for clear sound, while its ergonomic pistol grip and lightweight chassis make it easy to carry and use. A convenient folding handle allows for quick storage. This megaphone runs on 4 'D' batteries (not included) and has an audio projection range of up to 800+ yards.