... radio /walkie talkie throat vibration earpiece/earphone/headsetSuitable with Motorola, Kenwood, Icom, Yaesu/Vertex, Maxon, and Kirisun1 Separated microphone, PTT button ... , avoiding discomfort and pain, more concealment 3 Available for Motorola, Kenwood, Icom, Yaesu/Vertex, and MaxonSpecifications:SpeakerImpedance: 100Ω±15% Maximum power ...