Wireless <br />             <strong>Connection:</strong> 3.5mm <br />             <strong>Frequency Range :</strong> 80 - 12.5KHz  <br />             <strong>Sensitivity Range:</strong> -52dB <br />             <strong>Package weight:</strong> 0.381 kg <br />             <strong>Package size (L x W x H):</strong> 26.000 x 17.000 x 7.000 cm / 10.236 x 6.693 x 2.756 inches <br />             <strong>Package Contents:</strong> 1 x Headset Microphone, 1 x Clip-on Microphone, 1 x Wireless Transmitter, 1 x Wireless Receiver, 1 x 1.5V AAA Battery, 1 x 6F22 9V Battery                  <p><img src="http://des.chinabrands.com/uploads/pdm-desc-pic/Electronic/image/2016/01/25/1453711294169945.jpg" style="" title="1453711294169945.jpg"/></p><p><img src="http://des.chinabrands.com/uploads/pdm-desc-pic/Electronic/image/2016/01/25/1453711293706377.jpg" style="" title="1453711293706377.jpg"/></p><p><img src="http://des.chinabrands.com/uploads/pdm-desc-pic/Electronic/image/2016/01/25/1453711293600789.jpg" style="" title="1453711293600789.jpg"/></p><p><img src="http://des.chinabrands.com/uploads/pdm-desc-pic/Electronic/image/2016/01/25/1453711294376699.jpg" style="" title="1453711294376699.jpg"/></p><p><img src="http://des.chinabrands.com/uploads/pdm-desc-pic/Electronic/image/2016/01/25/1453711295379920.jpg" style="" title="1453711295379920.jpg"/></p><p><img src="http://des.chinabrands.com/uploads/pdm-desc-pic/Electronic/image/2016/01/25/1453711294205013.jpg" style="" title="1453711294205013.jpg"/></p><p><img src="http://des.chinabrands.com/uploads/pdm-desc-pic/Electronic/image/2016/01/25/1453711294265146.jpg" style="" title="1453711294265146.jpg"/></p><p><br/></p>