MFJ's new Ear-Vibration Speaker/Mic uses a special new technology to provide you with a state of the art, high quality speaker Mic. The speaker and microphone are both integrated into the earpiece. A highly sensitive "Vibration Pick-up Microphone" in the earpiece picks up the vibration of your earbone when you speak and then translates the vibration into an electric signal transmission through your transceiver!
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