SUNDELY Flexible Adjustable Throat Vibration Mic Headset Earpiece with Finger PTT for HYT (Hytera) Radio TC-300 TC-600 TC-1600 HYT2100 2-pin Throat Vibration Mic Headset Earpiece with Finger PTT for HYT (Hytera) 2-pin Radio 2-pin Jack, Flexible Adjustable Throat Vibration Mic, Finger PTT, 1 spare 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