Compatible with COBRA 2.5mm Microtalk as follows: ACXT series:ACXT1035r ACXT145 ACXT545. G Shape 1pin 2.5mm earpiece with PTT Microphone works with 2.5mm Jack for COBRA Microtalk CXT195 CX112 CXT390 CXT545 CXT531 CXT135 CXT145 PX655 etc Walkie Talkie FRS/GMRS radios capable of using a headset.
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