Keep in touch anywhere you go! * Range: Up to 5km/ 3 miles in outdoor condition (depends on the relief and weather conditions). Digital sound. * Rechargeable battery, with up to 14-hours battery life (2 micro-USB cables included). * 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