Features: Features 8 pin round Mic plug; Type Handheld Speaker Mic Microphone Headset; Microphone Form Factor Headset; To Fit Handheld Speaker Mic Microphone Headset; Connector(s) 8 pin round Mic plug; Connectivity Cable;6.5ft 8 pin Microphone extension cable for Alinco radio;compatible Microphone;EMS-57, EMS-53work with Alinco radio:DR-03T, DR-06TDR-135T, DR-135E, MKIIIDR-138T, DR-138EDR-235T, DR-235E, MKIIIDR-425T, DR-425E, MKIIIDR-635T, DR-635Eohter Alinco radio use 8 pin round Mic plugif your radio model not listed above, please see my other item or email us. Specifications: Type: Speaker microphone cable Model: For Alinco EMS-57, EMS-53 Frequency Band(s): VHF/UHF Model 8 Pin EMS-53/57 Compatible Brand For Alinco Compatible Model DR-03T, DR-06T DR-135T, DR-135E, MKIII DR-138T, Note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 x Extension Cable