SUNDELY&reg; Universal Listen-Only Acoustic Tube Headset/Earpiece For Cobra Radio Walkie Talkie (with 2.5mm jack) Universal Listen-Only Acoustic Tube Headset/Earpiece For Cobra Radio Walkie Talkie Most radios and handheld mics with 2.5mm audio jack, 1 Spare earbud included MT200, MT525, MT550, MT600, MT650, MT750, MT800, MT850, MT975, Li-3900, Li-4900, Li-5600, Li-6000, Li-6500, Li-6700, Li-7000, Li-7020, Li-7200, Li-7500, CTW135P, CTW285P DC 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 CXT85, CXT88, CXT90, CXT94, CXT95, CXT125, CXT135, CXT145, CXT175, CXT225, CXT227, CXT235, CXT237, CXT275, CXT280, CXT345, CXT400, CXT420, CXT425, CXT450, CXT545, CX80, CX105, CX105C, CX107, CX110, CX312, CXR700, CXR725, CXR750, CXR800, CXR825, CXR850, CXR875, CXR900, CXR920, CXR925, CXR950