Speaker Microphone, Product Type Speaker Microphone, Compatible Radio Type Handheld, Compatible Radio Brand Icom, Compatible Radio Series M25, M37, Compatible Radio Manufacturer Model Number ICM25EURO, ICM35, ICM37, ICM93D, Compatible Radio Grainger Model Number 460T29, 55EE26, Earpiece Jack Size Not Applicable, Radio Connector Type 1-Pin 4 poles, Noise Prevention Not Applicable, Push To Talk Yes, Intrinsically Safe No, Keypad Included No, Material Plastic, Cord Length 16 in, Waterproof Yes