Pyle Pro Professional Piezo Dynamic Megaphone Powerful piezo driver and large bell diameter for projection range up to one mile - ergonomic pistol grip and lightweight chassis 2 Modes: Talk And Siren - Powered By 8 x C Batteries - Not Included. Can be Optionally Powered via 12V Adapter Includes Wired Handheld Microphone (3) Megaphone Modes: Talk, Siren, MP3/AUX Aux (3.5mm) Input Connector Jack Ability to Connect & Stream External Devices (iPhone, Android, Smartphone, iPad, Tablet, etc.)Ergonomic Pistol Grip and Lightweight Chassis Powerful Piezo Driver - Large Bell Diameter Button Activated Siren Alarm Adjustable Volume Control For Indoor/Outdoor Use MAX Power Output: 50 Watt Non rechargeable