RoadKing RK564P 4-Pin Dynamic Noise Canceling CB Microphone<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> 4-Pin Connector </span></li><li><span class="a-list-item"> Dynamic Noise Canceling Microphone， black cycolac case </span></li><li><span class="a-list-item"> 2 Position Momentary Slide Switch， Normally Open Contacts </span></li><li><span class="a-list-item"> Frequency Response: 100Hz - 8kHz， Output Level @ 1kHzOutput Impedance: 2000 Ohms (Matches 600-5000 Ohm Inputs) </span></li><li><span class="a-list-item"> Open Circuit: -72dB (ret. 0dB = 1V/Ohm BarPower Level: -55dB (ret. 0db = 1Mw/10 Ohm Bar </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/61ObIpD1E5L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51C0k5rlpLL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/61HJvFDZJWL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51Bh4CZLuEL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51MjTGD3yZL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51jqxM007NL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51DktVMIVcL.jpg" noproxy>