Retevis 2 Pin Acoustic Tube Headset Walkie Talkies Earpiece Mic with VOX PTT Compatible Kenwood Baofeng UV-5R UV-5RA BF-888S H-777 RT21 RT22 Two-Way Radio (1 Pack) Total length 51.2 inch; standard length acoustic tube allows for greater flexibility The mushroom can take it easy and it fits directly into ear Dual functions PTT and VOX so that it can work in VOX mode with radios which has built-in VOX function Clip this hands free earpiece onto your shirt and begin using your radio device to communicate discretely and easily whether you're in security or hospitality Simple and convenient return process; 60 days warranty provide by us and 30 days no reason to return