Keep in touch anywhere you go! Range: Up to 8km/5 miles in outdoor condition (depends on the relief and weather conditions). Digital sound. 8 communication channels. LCD screen with background lighting and low battery indication. "Roger" beep and squelch function: Attenuate the background and signal noise while in reception mode. Send a ring tone to the other handsets to get their attention: 10 ring tones available! Flashlight to play in the dark or to send coded messages! 6 quick-access function keys (on/off, call, talk, channel choice, flashlight). Adjustable volume and hands free function.