Digital 2-channel radio. Provides superior coverage similar to high power 4/5 watt analog models. Interference free, private communication. Meets military standards for dust, moisture, shock, and vibration. Ideal for a variety of applications including retail stores, restaurants, healthcare settings, large event organization, security, and more. Features talk permit tone to alert users when a channel is available and they can speak, home channel designation, voice prompt menu, instant mute, long battery life (up to 14 hours), and more. DLR series is license free and hassle free, eliminating the need for regulatory paperwork and licensing applications and fees. Extended range without static ensures that voice communications are crisp and clear, even at the outside edge of coverage. Coverage area of 300,000 square feet and up to 20 floors. Requires (1) Li-ion 1800 mAh 3.7V battery, included. Also includes battery charger and belt clip. Operating temperature -30 deg (degrees) C (Celsius) to 60 deg C.