Speaker Microphone, Product Type Speaker Microphone, Compatible Radio Type Handheld, Compatible Radio Brand Icom, Compatible Radio Series 207H, 208H, 2200H, 2300H, 2720H, 2725E, 2800H, 2820H, E208, E2820, E880, ID-800H, ID-880H, Compatible Radio Manufacturer Model Number HM-133V, IC-207H, IC-208H, IC-2200H, IC-2300H, IC-2720H, IC-2725E, IC-2800H, IC-2820H, IC-E208, IC-E2820, IC-E880, ID-800H, ID-880H, Compatible Radio Grainger Model Number Not Applicable, Earpiece Jack Size 3.5 mm