Main Features:Frequency range: 136.00 - 174.00MHz / 400.00 - 520.00MHzStorage channel: 128Step frequency: 12.5 / 25KHzCommunication distance: 5 - 10KM (It also depends on actual situation)Work mode: same frequency simplex operation or different frequency simplex operation Brand: Baofeng Model Number: UV-8D ...