This Radio Earphone mic for Police, military, nightclubs, bars, security, restaurants, hotels, warehouses and the noisy environments etc.Compatible with KENWOOD 2-PIN 3.5mm 2.5mm Series Model Reference:- TK208, TK220, TK240, TK24D, TK248, TK250, TK260, TK260G, TK270, TK270G, TK272G- TK308, TK320, TK340, TK340D, TK348, TK350, TK353, TK360, TK360G, TK370, TK370G, TK372G, TK373, TK430, TK431- TK2100, TK2102, TK2130, TK2160, TK2170, TK2200, TK2202, TK2207, TK2212- TK2300, TK2300VP, TK2302, TK2312, TK2360- TK2400UK, TK2400VK, TK2402UK, TK2402VK- TK3100, TK3101, TK3102, TK3107, TK3207, TK3130, TK3131, TK3160, TK3170, TK3173- TK3200, TK3201, TK3202, TK3207, TK3212, TK3230, TK3230XLS- TK3300, TK3300VP, TK3301E, TK3302, TK3312, TK3360, TK3400, TK3402, TK3401DE, TK3401DT, TK3501E, TK3501T, TK5320, TK5400, TK5410- TH-D7AG, TH-D72A, TH-F6A, TH-F7E, TH-G71A, TH-K20A, TH-K21A- NX-220, NX-230, NX-240, NX-320 Compatible with BAOFENG 2-PIN 3.5mm 2.5mm Series Model Reference:- UV-100, UV-200, UV-3R, UV-3R+, UV-5R, UV-5RA, UV-5RC, UV-5RE, UV-5R+, UV-6, UV-B5, UV-B6- BF-666S, BF-777S, BF-888S, BF-A5, BF-F8, BF-FF8+, BF-K5, BF-V85 Compatible with Other brand Series Model Reference:- WOUXUN: KG-619, KG-639E, KG-659, KG-659E, KG-669, KG-669E, KG-679E, KG-689E, KG-699E, KG-703E, KG-818, KG-829, KG-889, KG-869, KG-816, KG-819, KG-833, KG-929, KG-UVA1, KG-UVD1P, KG-UV6D, KG-UV8D, KG-UV899, KG-UV920P- LINTON: LT-2188, LT-2268, LT-2288, LT-3188, LT-3260, LT-3268, LT-3288, LT-5288, LT-6188, LT-6288- Uniform Warehouse: UA300, UA301, UA400, UA401, UA500, UA501, UA550, UA551, UA600, UA700- QUANSHENG: TG-2AT, TG-22AT, TG-25AT, TG-42AT, TG-45AT, TG-K4AT- TYT: TH-F2, TH-F5, TH-F7, TH-F8, TH-2R, TH-UVH2, TH-446