Model: HM-368-core round plug microphoneApplicable models: IC-28A, IC228, IC229 are also applicable to IC-25, IC-28, IC-38, IC-45, IC-48, IC-77, IC-78, IC-120, IC-229, IC-271, IC-275, IC-290, IC-375 IC-451, IC-471, IC-475, IC-505, IC-575, IC-707, IC-718, IC-725, IC-728 , IC-729, IC-735, IC-736, IC-737, IC-745, IC-746, IC-751, IC-756, IC-761, IC-765, IC-775, IC-781, IC -820, IC-821, IC-900 IC-901, IC-910, IC-970, IC-1201, IC-1271, IC-1275, IC-2400, IC-3200, IC-3210IC-7800 IC- 756PROIII IC-746PRO IC-7400 IC-7200 IC-7600 IC-7700...