Amplivox S610A 50-Watt Half Mile Hailer 50W multimedia stereo amplifier with 3 MIC inputs Includes a dynamic mic with 5' Coiled cord Weatherproof reverberant Horn speaker Emergency siren button Shoulder strap Reaches audiences up to 3, 000 Weatherproof Horn speaker carries sound The length of a football field 50W multi-media stereo amplifier with 3 MIC inputs Includes dynamic mic with 6 Coiled cord Shoulder strap for easy portability Reaches audiences up to 3,000 Weatherproof horn speaker carries sound the length of a football field 50W multi-media stereo amplifier with 3 mic inputs Includes dynamic mic with 6 coiled cord Shoulder strap for easy portability