The earpiece is made of durable PU material Removable transparent vacuum pipe makes the microphone covert and comfortable to wear Walkie talkie earpiece headset with good performace for both listening and talking,prevent distortion of sound– No distortion, attenuation or frequency jumps Clip this hands free earpiece onto your shirt and begin using your radio device to communicate discretely and easily Compatible with the Icom IC-F4011 IC-F3 IC-F3S IC-F21S IC-F4 IC-H6 IC-U12 IC-V82 radio etc Experience seamless communication with our KS K-STORM Acoustic Tube Surveillance Earpiece Headset, designed for compatibility with a range of Icom radio models. Crafted with durable PU material, these in-ear headsets ensure comfort during extended use. The removable transparent vacuum pipe houses a covert microphone, allowing for discreet and hands-free communication. Each pack contains two headsets, perfect for teams or backup. The 3.5 mm jack connects securely to your radio device, while the retractable cable ensures tangle-free operation. With a frequency range of 20 Hz - 20,000 Hz, these headsets deliver clear audio performance, preventing distortion, attenuation, or frequency jumps. Clip the headset onto your shirt for easy access and use your radio device with ease.