Single band & single frequency walkie talkie with earpieces, bulit in led torch for dark environment Long distance communication with clear sound, up to 3.6 miles, RF power output: 3w, frequency range: uhf/400-470mhz with 16 preset channel Portable & easy to carry with belt clip, hands free to talk with earpiece, 1500m Ah rechargebla battery support all day working Lower power consumption & low batter alarm, pc software programmable & english voice prompt Perfect for team work, such as securitiy, hotel, supermarket, warehouse, restaurant & family. Frequency Range: UHF 400-470 M Hz RF Rated Power: = 5W Channel Capacity: 16 Channel Spacing: 25 K Hz Operated Voltage: 3.7V Battery: 1500 M Ah Li-ion Battery Life: About 8 hours Frequency Stability: