2 PIN PTT MIC Headphone Headset Earpiece for Baofeng UV-5R Kenwood Wouxun Radio Earpeice Design PTT Switch Spring Line Puxing:PX-666, PX-777, PX-3288 Compatible Models: BF-480 BF-490 BF-320 BF-V6 BF-V7 BF-V8 BF-658 BF-520 BF-530 BF-666 BF-777 BF-888 BF-999 BF-666S BF-777S BF-888S BF-999S UV-5R UV-3R+ PLUS