?Warranty?Simple and convenient return process.90 days warranty and 30 days no reason to return. ?Variety of applications?Police, private security, public service, hospitals, bars, restaurants, military, paramilitary, private communications & corporate security. The applications of this walkie talkie earpiece are endless. Great for the Security Industry, Hunting, and various activities. ?Easy to wear?The acoustic tube fits snugly in the ear and keeps your conversations private.High performance control PTT,This headset has clear call,Comfortable press feel. ?PTT MIC Function?It has a remote microphone with push to talk button .So you don't need to use the Mic of radio When you want to transmit.You can keep in touch with your team without distraction or discomfort. ?Compatible information?Compatible for: Baofeng UV-5R/888S, Retevis H-777/R21/RT22, Kenwood TH-F6/F6A/D7 and so on. To see more compatible information, please seach in the description page.