K-STORM walkie-talkie headset, provide returns and refunds service within 30 days and lifetime customer service. If you have any problems, please tell us through the Amazon platform,our professional team will solve your after-sales problems as soon as possible. Earbud Adopts the soft silicone, comfortable enough to forget it's there. Big size PTT and wearing gloves does not affect the key operation. The earpiece is made of durable PU material. With this radio earpiece that includes a state-of-the-art, in-line PTT microphone, it’s easier than ever to use your radio device for hands-free communication – no distortion, attenuation or frequency jumps. The two way radio earpiece is compatible with leading radio headset brands Kenwood, Puxing, Wouxun, Baofeng. DON'T WORK for Motorola and Midland radio.. Compatible with leading radio headset brands Kenwood, Puxing, Wouxun, Baofeng