AmpliVox Half-Mile Hailer Black. S610A includes powerful 50 watt amplifier and outdoor horn provide powerful clear crisp sound. S610A model includes dynamic mic with 5 foot coiled cord and shoulder strap. Three mic inputs (dynamic condenser wireless) that can be used simultaneously; the condenser (electret) input includes phantom power. Auxiliary input jack with seperate volume and tone controls for CD/tape projectors tablets or i-pod player. Two speaker jacks with total of 4 speakers possible with inYin connector (not included) speaker jacks can support between 4 to 16 Ohms. Auxiliary line out to record presentation in real time. Tripod mount built in. Weighs only 4 (8 with batteries). Powerful reverberant horn delivers 108dB sound pressure level over the 450Hz - 4kHz audio range. Reach crowds up to 5000. Covers the length of a football field Lets you see and be seen. Great for athletic events band practice field days public safety law enforcement outdoor marketing events crowd control auctioneers political campaigns missionaries or any outdoor event.Power with 10 D-cell alkaline batteries (not included) for up to 200 hours or Optional 1460 AC adapter or S1465 Rechargeable NiCad Battery Pack (requires S1460 AC adapter). Dimensions: 12inh x 11inw x 10ind Specifications for AmpliVox Half-Mile Hailer: Manufacturer: AmpliVox Included Accessories: 5' Dynamic microphone Shoulder strap Color: Black Features of AmpliVox Half-Mile Hailer Covers the length of a football field. Reaches audiences up to 5000. Weatherproof reverberant horn speaker Delivers 108db sound pressure level over the 450Hz 4kHz audio range 50W multimedia stereo amplifier with 3 mic inputs Includes dynamic mic with 5' coiled cord Shoulder strap Power with 10 D-cell alkaline batteries (not included) for up to 200 hours or Optional 1460 AC adapter or S1465 Rechargeable NiCad Battery Pack (requires S1460 AC adapter) Package Contents: AmpliVox Half-Mile Hailer 5' Dynamic microphone Shoulder strap AmpliVox S610A: Half-Mile Hailer Black