Speaker Microphone, Product Type Speaker Microphone, Compatible Radio Type Handheld, Compatible Radio Brand Icom, Compatible Radio Series F1000, F1100D, F2000, F2100D, F3001, F3230D, F4001, F4230D, Compatible Radio Manufacturer Model Number F1100D, F2100D, Compatible Radio Grainger Model Number 40XA12, 54ZU80, 54ZU81, 55KD83 55KD85, 55KD84, Earpiece Jack Size 3.5 mm, Radio Connector Type 2-Pin, Noise Prevention Not Applicable, Push To Talk Yes, Intrinsically Safe No, Keypad Included No