SUNDELY&reg; Over Head Earpiece/Headset with Boom Mic & PTT-VOX Switch for Motorola Radios Walkie Talkie GP9000 JT1000 MTX8000 HT1000 ASTRO Multi-pin Over Head Earpiece/Headset with Boom Mic PTT Button for Motorola Radios Walkie Talkie Over Head Style, Boom mic, Multi-pin jack, PTT-VOX Switch GP900, GP1200, GP9000, MTX838, MTX8000, MTX9000 MTX-LS, MTX-B5, MTX-B7 XTS1500, XTS2500, XTS3000, XTS3500, XTS5000, XTS5000R, XTS5100, XTS7700, HT1000, HT2000, JT1000, PR1500, MT1500, MT2000, MTS2000, ASTRO EFJohnson: 51SL, 5000, 5100, 7700 SERIES, 511X, 512X, 518X