IFeng Covert Acoustic Tube Throat Mic Earpiece Headset with Finger PTT Microphone for 2 pin Two Way Radio Walkie Talkie TYT MD-380 MD-280 Kenwood TK-2170 TK-2170K TK-2200 Has a remote microphone with push to talk button you can clip anywhere. The microphone transmits directly from your throat, so 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. Compatible with :* Kenwood TK Series: TK-2000/3000, TK-2107/3107, TH-D72/D72E, TH-K4/K4E, TH-21BT, TH-22, TH41AT, TH41BT, TH-225, TH-235* Hytera Radio: TC-268, TC-268S, TC-270, TC-270S, TC-368, TC-368S, TC-370, TC-370S.* WOUXUN Radio: KG-699E, KG-689, KG-689 PLUS, KG-669, KG-669 PLUS, KG-659, KG-659 Plus, KG-679, KG-UVD1 * BaoFeng Radio: UV-5R ,BF-666S, BF-777S, BF-888S