Powerful Voice Amplifier Speaker: Talk loud & clear pile 50W megaphone. The coiled-cord handheld microphone is designed to allow for megaphone.The sound projection can effectively respond to over 200 yards and 105 decibels of noise to get peoples attention! Technical Specifications Mode: Talk and siren Projection Range: 1200 yards * Indoor and outdoor use * Ergonomic handle W / light base board Output: 50 watts * Built-in SD card and USB memory card reading card Power supply: 8 x C batteries (without battery) Size: Diameter 9.44 Weight: 3.5 lbs * MP3 player or external device insert 3.5 mm Aux In Jack Whats in box: Expand: Sound instrument horn Removable Rechargeable Battery Charger Battery: 11 Volt Lithium , 1500 mm Cheap Unit Size: 9.5 inch Diameter, 13.8 inch Length