BAOFENG PTT Covert Air Acoustic Tube Headset Earpiece for Kenwood PUXING Baofeng UV-5R UV-5RA 888S Retevis H777 Transparent flexible acoustic tube Soft plastic earbud fits snugly to either left or right ear. With built-in line microphone, a push-to-talk button. Clear sound performance without distortion for both listen and talk. Application for the people work in police station, military, hospital, security office, eatery, etc