K-head jack 2-pin design: compatible with Baofeng uv5r uv82 walkie-talkies, made of good materials, to ensure the normal transmission and reception of sound Compatibility: 2pin jack cable for use with ear muffs without 7mm cable, compatible with comta VI xpi without 7mm cable Lightweight material, suitable length, easy to apply and carry; back clip to hold the strap, not easy to fall off in outdoor activities Simple operation: Built-in microphone, connect the intercom device, press the button to receive sound or send sound, convenient and simple K-head 2 pin adapter with microphone button kit, compatible with baofeng uv5r, uv82 etc walkie talkies, built-in 3.5mm to 2 pin jack cable microphone, with two combinations of cables to choose from, 3.5mm cable or 2 pin cable K head 2 pin adapter with microphone button kit, compatible with UV5r, uv82 etc walkie talkies, built-in 3.5mm audio input.