HighlightsLOUD MEGAPHONE - 30W power amplifies voice that can travel up to 800 yard. Never strain your voice.SIREN MODE - Draw audience's attention fast by blasting loud emergency audio with a push of a buttonVOLUME ADJUSTABLE - Control the bullhorn audio output using the button in the back of megaphone to your liking.MULTI INPUT - Connect an external audio source with a USB/SD Card & expand your communication option.ALL WEATHER USE - Heavy duty ABS build, Sturdy & weather-resistant, ensures lon