6 PIN Connector Walkie Talkie Earpiece with PTT mic Compatible with Retevis Radio models:NR30 RB23 RB46 RT29 RT47 RT47V RT48 RT82 RT83 RT87 Compatible with Ailunce Radio model:HD1 Compatible with Motorola Radio models: EX500,EX560,EX560XLS,EX600,EX600XLS,GL200,GL2000,GP328Plus,GP338Plus,GP344,GP388,GP688,PRO5150 Elite,PRO5151 Elite,PRO7150,PRO9150 Compatible with HYT Hytera Radio models: TC-370M TC-380M TC-3000 TC-3600 TC-3600M TC-610P TC-700P TC-610S TC-710 TC-780 TC-980 TC-780MTP PT-790 TC-880GM