Amplivox SW610A 50-Watt Wireless Half Mile Hailer<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> 50W wireless multimedia stereo amplifier with built in 16 Channel UHF receiver; 584-608MHz </span></li><li><span class="a-list-item"> Outdoors. carries sound the length of a football field. Reaches crowds up to 3，000 </span></li><li><span class="a-list-item"> Lapel &amp; Headset Mics with body pack transmitter </span></li><li><span class="a-list-item"> Power with S1460 AC adapter or power up to 200 hours with 10 D-cell alkaline batteries (NOT INCLUDED) or S1465 Rechargeable NiCad Battery Pack (requires S1460 AC adapter) </span></li><li><span class="a-list-item"> Reaches audiences up to 3，000 </span></li><li><span class="a-list-item"> Weatherproof horn speaker carries sound the length of a football field </span></li><li><span class="a-list-item"> 50W wireless multimedia stereo amplifier with built in receiver </span></li></ul><!--   Loading EDP related metadata  --><div aria-live="polite" class="a-row a-expander-container a-expander-inline-container"><div aria-expanded="false" class="a-expander-content a-expander-extend-content" style="display: none;"><ul class="a-unordered-list a-vertical a-spacing-none"><li><span class="a-list-item">Wireless lapel and headset mic with body pack transmitter</span></li><li><span class="a-list-item">Shoulder strap for easy portability</span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/410CPQVZQCL.jpg" noproxy></div></div>