Speaker Microphone, Product Type Speaker Microphone, Compatible Radio Type Handheld, Compatible Radio Brand DSR, Compatible Radio Series DSR-590, Compatible Radio Manufacturer Model Number DSR-590, Compatible Radio Grainger Model Number Not Applicable, Earpiece Jack Size 3.5 mm, Radio Connector Type 2-Pin, Noise Prevention Noise Cancelling, Intrinsically Safe No, Keypad Included No, Material ABS Plastic, Cord Length 24 in, Color Black, Includes Connector for Radio, Overall Height 3 in