The earpiece features a large noise-cancelling touch PTT microphone that sends sound at the touch of a button, making it easy to find in the most difficult of situations. Excellent for down sleeve and under clothing operation or can be clipped near the lapel or to the vest. The earpiece works very well for close protection operatives and door supervisors, although it does take a bit of practice to get the hang of - it really is worth the effort. Sound quality and the clarity are exceptional. Low-profile transparent acoustic tube transmit sound in high quality and would be hardly noticed by others around you. If you are serious about your job then this type of earpieces should satisfy your craving for the best possible quality earpieces you can get your hands on. Comaptible with BAOFENG radios: BF-480, BF-490, BF-V7, BF-V8, BF-658, BF-520, BF-530, BF-999, BF-888, BF-777, BF-888S, BF-999S, FF-345 AND MANY MORE. Comaptible with KENWOOD TH SERIES: TH-D7, TH-D7A, TH-D7AG, TH-D7E, TH-F6, TH-F6A, TH-F7, TH-F7E, TH-G71, TH-G71A, TH-G71E, TH-K2, TH-K2A, TH-K2E, TH-K2ET, TH-21, TH-21AT, TH-21BT, TH-22, TH-22A, TH-22AT, TH-22E, TH-25, TH-26, TH-27, TH-28, TH31AT, TH31BT, TH41AT, TH41BT, TH-42, TH-42A, TH-42AT, TH-42E, TH-45, TH-46, TH-47, TH-48, TH-55, TH-75, TH-77, TH-G71, TH-205, TH-215, TH-225, TH-235, TH-235A, TH-235E, TH-315, TH-415. Comaptible with KENWOOD TK SERIES: PROTALK TK-2100, TK-2200, TK-3100, TK3200, TK3201, PROPOWER TK-2102, TK-3102, TK-2160,