SUNDELY Over-Head Earpiece/Headset Boom Mic PTT-VOX Switch for Cobra Micro-Talk 2 Two Way Radio Walkie Talkie MT600 PR3180 CXT545 1-pin Over-Head Earpiece/Headset Boom Mic PTT-VOX Switch for Cobra Micro-Talk 2 Two Way Radio Walkie Talkie 1-pin, PTT-VOX Switch, With Boom Mic MT100, MT115, MT200, MT250, MT300, MT525, MT550, MT600, MT615, MT650, MT750, MT800, MT850, MT975, PR237, PR240, PR245, PR260, PR350, PR375, PR385, PR550, PR560, PR580, PR590, PR650, PR3000, PR3100, PR3175, PR3180, PR3500, PR3550, PR3575, PR4000, PR4200, PR4250, PR4300, PR4700, PR4750, PR5060 Li-3900, Li-4900, Li-5600, Li-6000, Li-6500, Li-6700, Li-7000, Li-7020, Li-7200, Li-7500, CX80, CX105, CX105C, CX107, CX110, CX312, CXT85, CXT88, CXT90, CXT94, CXT95, CXT125, CXT135, CXT145, CXT175, CXT225, CXT227, CXT235, CXT237, CXT275, CXT280, CXT345, CXT400, CXT420, CXT425, CXT450, CXT545, CXR700, CXR725, CXR750, CXR800, CXR825, CXR850, CXR875, CXR900, CXR920, CXR925, CXR950 CTW135P, CTW285P DC, FRS132, FRS237, MRHH100, MRHH200, MRHH330