TYT 8000D Wireless Device Licensed by the Communications and Information Technology Commission The device is considered one of the strongest and best devices in the market, suitable for security companies, contracting, event organization, radio amateurs, and wilderness enthusiasts. Communication range up to 10 km in open areas Two-year warranty against manufacturing defects Works on high and low frequencies UHF/VHF Frequency range VHF: 136/174 UHF: 400/520 Package contents: 3600 mAh battery that works for two consecutive days Charger with base Device holder Long antenna for long distances Short antenna for short distances