The Pyle PMP31BL is a compact and portable 30-watt megaphone speaker that provides high-powered sound projection. It features two modes: Voice Talking, which amplifies your voice through the microphone, and Siren Alert for emergency situations. The megaphone has an adjustable volume control and an ergonomic pistol grip for comfort during use. Its lightweight, portable design includes a convenient folding handle. Powered by 4 'D' batteries (not included), the PMP31BL offers an audio projection range of up to 800+ yards, making it ideal for outdoor activities and emergency situations.