ONLY Compatible with 1-Pin Walkie Talkie Two Way Radio Microtalk CXT390 CXT545 CXT531 CXT195 CXT135 CXT145. Surveillance walkie talkie headset compatible with MT200 MT525 MT550 PR375 PR385 CX105 CX112 CXT145 CXT195 CXT345 CXT545 CXR925 ACXT1035r ACXT145 ACXT545 PX655 RX385 RX685 etc.
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