This device is the Baofeng BF-888S portable wireless communication device, one of the most popular economical and practical walkie-talkies used for desert trips, camping, construction sites, warehouses, and restaurants. Key technical specifications of the device: Frequency Range: Operates on UHF waves in the range of 400 to 470 MHz. Number of Channels: Contains 16 memory channels programmable via the top rotary knob. Transmission Power: Up to 5 watts. Actual Range: Ranges from 1 to 3 km in cities and residential areas, and can reach 4 or 5 km in open and wilderness areas (depending on the terrain and obstacles). Battery: Rechargeable 1500 mAh Lithium-ion (Li-ion) battery, works up to 8 hours of continuous use. Additional Features: Built-in LED flashlight, Voice Activated Transmission (VOX) feature, and low battery alert.