Features : 1.Small and convenient size; it easily fits on your hand, easy to operate for all ages; 2 Wattage power output; each radio has a removable belt clip.  2. Frequency range is UHF 400-470MHz; 16 pre-programmed channels; each radio has identical frequency on each of the 22 channels out of the box.  3. The charger comes with an AC wall-wart Type A plug and works in 110v-240v, it takes about 2.5 hours to fully charge; battery life is determined by transmit time; it lasts around 5 to 96 hours.  4.High quality built-in speaker on the radio provides loud and crystal clear sound; Push-to Talk button and built-in mic on the radio.  5. Range is very dependant on terrain: up to 8 miles with no obstructions, less in congested area.work great in a commercial construction or around the house, suitable for security team, maintenance team, construction team , fire department, warehouse, factory, kitchen staff, hotel.    Specification : Frequency range: 400-470 (MHz);  RF output power: 0.5 (W);  Number of channels: 22 (a);  Theoretical communication distance: 8 (km);  Working voltage: 6 (V);  Frequency stability: 0.5 (ppm)Theoretical battery life: 24 (h);  Talk time: 5h;  Standby time: 4 days;  Monitoring function: None;  Color: orange, blue, red;  Specifications: EU, US;  Size: 37.8 * 56.5 * 151 (mm);  Weight: 85 (g);    Package includeds : 2 x Walkie talkie;  1 x User Manual;