IFeng 2 Pin Covert Acoustic Tube In-ear Air Acoustic Earpiece Headset with PTT Mic for Kenwood TK-370 TH-22AT WOUXUN KG-UVD1 KG-639 Almost All with a two pin plug, former pin diameter of 3.5 mm and 2.5 mm in diameter after pin, double pin from 8 mm within, 11 mm center distance of 2 pin The transparent tube connecting the ear bud makes you look like a secret service agent or a body guard and protects your health from radio electromagnetic wave radiation The earpiece fits snugly in your ear easily which keeps your conversations private Excellent for use in police, military, nightclubs, bars, paintball, security, restaurants, hotels, bouncer, warehouses, and noisy environments Compatible with: *Kenwood: TK-2100/ 2160/3100/3101/3102/3107 *Linton LT-2288/3288/6288* WOUXUN KG-UVD1/UVDIP KG-669/659/679/689/639/699/801 QUANSHENG TG-K4AT/2AT/22AT/45AT/42AT/25AT/UV RELM RPU416,RPV516,RPU499,RPV599X WEIERWEI VEV-3288S,VEV-6288,VEV-3288 BAODEENG UV-5R Series BF-480/490/320/V6/520/530/999/888/777/666S/777S/888S HYT TC286 386 2685 3865 6685, TC 278 378 388, TC 2100 2088