The Pyle PMPRA514OR Megaphone is a powerful 50-watt bullhorn designed for both indoor and outdoor use. It includes multiple modes such as Talk, Siren, Music, Whistle, and a 60-second recording option. You can stream MP3 and digital audio files through the aux input (3.5mm jack). This megaphone also features a built-in automatic siren alarm for emergencies, with an adjustable volume control for optimal sound projection. Its ergonomic pistol grip and lightweight construction ensure portability, and the included shoulder strap makes carrying hands-free. The megaphone can connect to external devices like smartphones, tablets, and iPads and operates on 8 'C' batteries (not included).