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 Models:ALAN MIDLAND:G6 / G7 / G8 / G9 / G12 M24 / M48 / M99 / 445 Sport / 445 BT/ ALAN 421 / 441 / 443 / 451 / 456R Marine Radio: MIDLAND Ocean / MIDLAND Pacific / MIDLAND Atlantic /CB Radio Alan 42GXT Series: XT18 XT20 GXT255 GXT250GXT400 GXT444 GXT450 GXT500 GXT300 GXT325GXT550 GXT555 GXT565 GXT600 GXT635 GXT650 GXT656GXT661 GXT700 GXT710 GXT735 GXT750 GXT771 GXT756 GXT757 GXT800 GXT808 GXT850 GXT881 GXT720 GXT775GXT900 GXT808 GXT850 GXT881 GXT720 GXT775 GXT1000 GXT1050 GXT950 GXT740 GXT785 GXT760 GXT795 and more new models......LXT Series:LXT80 LXT110，LXT112 ，LXT114， LXT210 LXT216 LXT276 LXT310 LXT300 LXT303 LXT305 LXT315 LXT320 LXT330LXT350 LXT335 LXT376 LXT318 LXT319 LXT322 LXT323 LXT324 LXT340 LXT345 LXT360 LXT365 LXT380 LXT385LXT410 LXT420 LXT435 LXT440 LXT460 LXT480 LXT490More other compatible models， please feel free to contact us for more details.