The microphone transmits directly from your throat， it is not sensitive to the background noise. With the best-quality transparent acoustic tube that could hardly be detected by people around you， And protect your health from radio electromagnetic wave radiation .This is exceptionally ideal for usage in high ambient environment such as driving， riding motorcycles and bicycles. And it is also ideal for surveillance purposes and security at airports， casinos， crowd control at conventions and concerts， and other working environment requiring discreet communications. The throat mic could be easily hidden under the collars too.1.100% Brand new!2. Twin right angle: Ear 3.5mm stereo (top pin). Mic 2.5mm stereo (bottom pin).3. Spaced Between Two Pin: 11mm4. Weight:65gPackage Includes:1x Throat Mic for KENWOOD Radio