***** *****The earpiece is made of durable PU material *****With this radio earpiece that includes a state-of-the-art, in-line PTT microphone, its easier than ever to use your radio device for hands-free communication No distortion, attenuation or frequency jumps *****This surveillance earpiece speaker uses the same as the headphone speaker, excellent audio quality *****Earbud Adopts the soft silicone, comfortable enough to forget it's there *****This 2 way radio earpiece compatible with leading radio headset brands Kenwood, Puxing, Wouxun, Baofeng. DON'T WORK FOR Motorola and Midland Radio