Now featuring a replaceable surgical grade acoustic tube earpiece that is discrete and comfortable. Greater flexibility and savings as you can make the acoustic air tube personal issue to staff and leave the harness always attached to the radio. Accidental activation proof PTT Electret Condenser Microphone provides superior audio quality. Positive action PTT for reliable transmissions. Suitable for Kenwood: TK-2207, TK-3207, TK-2107, TK-3107, TK-2217, TK-3217,TK-240, TK-250, TK-255, TK-260, TK-260G, TK-270, TK-270G, TK-272G, TK-278, TK-278G, TK-340, TK-349, TK-350, TK-353, TK-360, TK-360G, TK-370, TK-370G, TK-373G, TK-378, TK-378G, TK-430, TK-431, TK-715, TK-2100, TK-2102, TK-2107, TK-2118, TK-2160, TK-3100, TK-3101, TK-3102, TK-3107, TK-3118, TK-3160 PUXING: PX-888, PX-777, PX-666, PX-328 QUANSHENG: TG-K4AT, TG-2AT, TG-45AT, TG-42AT, TG-22AT, TG-25AT WEIERWEI: VEV-3288S, VEV-6288, VEV-3288,VEV-V1000