... radio with PTT & VOX availabl,suitable for Mo Adjustable Throat Microphone HRE-6024 for Motorola, Kenwod, ICOM, Yaesu, HYT ... .2KΩOperation voltage 1V~10V SPEAKERDimension 18mmNominal Impedance 32ohm±15%Frequency Range 420Hz-20kHzSensitivity 102±2dBRated Power 30mW Maximum ... 2.2mmDurable temperature-20°C~90°CMaterial: PU Adjustable Throat Microphone HRE-6024 for Motorola, Kenwod, ICOM, Yaesu, HYT brand ...