Speaker Microphone, Product Type Speaker Microphone, Compatible Radio Type Desktop, Compatible Radio Brand Icom, Compatible Radio Series M510, M605, Compatible Radio Manufacturer Model Number IC-M506, IC-M510, IC-M510E, IC-M605, IC-M605EURO, Compatible Radio Grainger Model Number 443K78, 443K79, Earpiece Jack Size Not Applicable, Radio Connector Type 8-Pin Round Plug, Noise Prevention Not Applicable, Push To Talk Yes, Intrinsically Safe No, Keypad Included No, Material ABS Plastic