Walkie talkie twin set (2 handsets) 446MHZ Frequency Transmit power 0.5W Communication range 3-5KM (in open space) 8 Channels Channel scan Backlit display Auto power saving Key tone & torch Dual channel monitor Built-in VOX function (3 levels) Roger beep function Earphone output Battery capacity indication 10 different call melody tones Belt clip included for both handsets If using rechargeable batteries, you can charge the batteries while they are inside the walkie talkie, by using a MicroUSB cable (if using not rechargeable batteries, nothing will happen)