SUNDELY FBI Style SURVEILLANCE Covert Headset Earpiece Mic For HYT (Hytera) Radios TC-500 TC-600 TC-700ExPLUS FBI Style SURVEILLANCE Covert Headset Earpiece Mic For HYT (Hytera) Radios 2-pin Hidden microphone inside PTT switch, 1 spare plastic earbud included TC-300, TC-446S, TC-500, TC-505, TC-508, TC-518, TC-580, TC-600, TC-610, TC-618, TC-620, TC-626, TC-700, TC-700ExPLUS, TC-900 TC-1600, TC-2100, TC-2110, TC-3000, TC-3600 HYT850, HYT2100