... around Background noise cancel Military throat vibration mic for Motorola wireless radio GP900 GP9000 HT1000 JT1000 --Two sensors design ... that make any radio are valid Compatible with :For Motorola : GP900,GP9000,HT1000,JT1000 MT2000,MTS2000,MT6000, MTX838,MTX900 ... ,MTX900, MTX1000,MTX8000,MTX9000, MTX-LS,XTS2000,XTS2500, XTS3000, XTS3500, XTS5000/5100/7700For EF ...