The Pyle PMPRA514RD Megaphone is a compact and powerful 50-watt bullhorn designed for effective communication in both indoor and outdoor environments. It features multiple modes, including Talk, Siren, Music, Whistle, and a 60-second recording feature. The built-in automatic siren alarm is perfect for emergency situations, and the aux input lets you stream MP3 and digital audio files. With an ergonomic pistol grip and shoulder strap, this megaphone is lightweight and easy to carry. It connects to external devices like smartphones, tablets, and iPads, and operates on 8 'C' batteries (not included).