The Half-Mile Hailer blows away conventional megaphones with 50-watts of power. It covers crowds up to 5,000, a football field! And unlike megaphones which cover your face, the Half-Mile Hailer lets you see and be seen. The Half-Mile Hailer blows away conventional megaphones with 50-watts of power. It covers crowds up to 5,000, a football field! And unlike megaphones which cover your face, the Half-Mile Hailer lets you see and be seen.
