Two-wire Microphone Unit With Miniature Lapel Microphone, Clear Tube Earpiece And A Wireless Push-to-talk Button. Designed Specifically For Executive Protection And Tactical Teams, Swat And First Responders. Cord Is Reinforced With A Strand Of Kevlar To Insure Reliability. Can Only Be Used With Radios With Multiple Pin Connectors. Features Quick Release Radio Adapter. motorola Gp1280, Gp140, Gp320, Gp328, Gp329, Gp338, Gp339, Gp340, Gp360, Gp380, Gp640, Gp650, Gp680, Ht1250, Ht1250ls, Ht1550, Ht1550xls, Ht750, Mtx8250, Mtx8250ls, Mtx850, Ntx850ls, Mtx9250, Mtx950, Pro5150, Pro5350, Pro5450, Pro5550, Pro5750, Pro7150, Pro7350, Pro7450, Pro7550, Pro7750, Pro9150, Ptx700, Ptx760, Ptx780