Product Features: Action Throat Mic Headset. Inline VOX-PTT Switch. In-Ear Speaker. Vibration Sensors. Transparent flexible acoustic sound tube. Hidden microphone inside PTT switch. Soft plastic earbud fits snugly to ear. One spare plastic earbud included. Compatible Midland/Alan 2-pin Models: Alan Midland: G5, G6, G7, G8, G9, G10, G12, G225, G226, G227, G300, G300M M24, M48, M99 ALAN 421, 441, 443, 445 Sport, 445 BT, 451, 456R Marine Radio: MIDLAND Ocean, MIDLAND Pacific, MIDLAND Atlantic, CB Radio Alan 42 Midland 70-440BP, 72-822, 75-501, 75-510, 75-785, 75-786, 75-810, 75-820, 80-125, 80-150, 80-400, 80-425 Alan 39, Alan 507, Alan 607, Alan 643, Alan 654, Alan 95 Plus, Atlantic-i, CT-22 Nautico 1, Nautico 3, Ocean, Pacific, SP-410, SP-420, SP-430, SP-440 GXT Series: GXT250, GXT255, GXT300, GXT325, GXT400, GXT444, GXT450, GXT500, GXT550, GXT555, GXT560, GXT565, GXT600, GXT635, GXT650, GXT656, GXT661, GXT700, GXT710, GXT720, GXT735, GXT740, GXT750, GXT756, GXT757, GXT760, GXT771, GXT775, GXT785, GXT795, GXT800, GXT808, GXT850, GXT860, GXT860VP4, GXT881, GXT895VP4, GXT900, GXT950, GXT1000, GXT1000VP4, GXT1050, GXT1050VP4, GXT2000VP4, GXT2050VP4, GXT5000 LXT Series: LXT80, LXT110, LXT112, LXT114, LXT114VP, LXT118, LXT118VP, LXT210, LXT216, LXT276, LXT300, LXT303, LXT305, LXT310, LXT315, LXT318, LXT319, LXT320, LXT322, LXT323, LXT324, LXT326, LXT328, LXT330, LXT335, LXT340, LXT345, LXT350, LXT360, LXT365, LXT376, LXT380, LXT385, LXT410, LXT420, LXT435, LXT440, LXT460, LXT480, LXT490, LXT490VP3, LXT500VP3, LXT535, LXT535VP3, LXT550, LXT600VP3 Other models: XT18, XT20, XT23S, XT28, XT511, XT511MO More models, please feel free to contact us for more details.