Description: Compatible with Baofeng,Kenwood,RELM ,WOUXUN ,QUANSHENG ,PUXING ,Linton WEIERWEI ,and more. Microphone with in line push-to-talk (PTT) switch: easy to use and communicate. In-Ear headset & earhook design: flexible to wear and convenient to adjust，Clip on for 2-pin radio devices. Prefect for demanding covert security applications where sound clarity and earpiece durability are of paramount importance. Great for use in police, nightclubs, bars, security, restaurants, hotels, bouncer, warehouses, and noisy environments. Specification: For Baofeng: UV-5RA UV-5RB UV-5RC UV-5RD UV-5RE UV-5RE+ BF-666S BF-777S BF-888S For Kenwood : TK-208 TK-220 TK-240 TK-240DTK-248 TK-250 TK-260 TK-260G TK-270 TK-270G TK-308 TK-320 TK-340 TK-340D TK-348 TK-350 TK-353 TK-360 TK-360G TK-370 TK-370G TK-372G TK-373G TK-378 TK-378G TK-430 TK-431TK-2100(Pro Talk) TK-2102(Pro Power) TK-2130(Pro Talk XLS) TK-2160 TK-3100 (Pro Talk) TK-3101(Free Talk XL) TK-3102(Pro Power) TK-3107 TK-3118 TK-3130(Pro Talk XLS) TK-3131(Free Talk XLS) TK3160 For RELM : RPU416 RPV516 RPU499 RPV599X For WOUXUN : KG-UVD1 KG-UVD1P KG669 KG659 KG679 KG689 KG639 KG699 KG801 For QUANSHENG : TG-K4AT TG-2AT TG-45AT TG-42AT TG-22AT TG-25AT TG-UV For PUXING : PX-777 PX777PLUS PX333 PX888 PX328 PX999 PX-666 For Linton : LT-2288 LT-3288 LT-6288 LT-5288 LT-3188 LT-2188 LT-3260 LT-2268 LT-3268 LT6288 LT6188 LT3288 For WEIERWEI : VEV-3288S VEV-6288 VEV-3288 Package Includes: 1 Piece In-ear Earpiece Headset for Walkie Talkie .