Portable VHF 136-174MHz 5W Two Way Radio w/ 128 Channels THE DSR-590 COMES COMPLETE WITH ANTENNA, BATTERY , AND CHARGING STATION. DSR DETAIL SPECS Frequency Range: 450-520MHz / UHF Talk Range: .75 ~ 3 Miles / Channels: 128 / Voltage: 7.4V / Battery: 1400mAH Li-ION / Weight: 6 oz(with Battery and Antenna) / Antenna Impedance: 50 / Dimensions: 2.2in x 4.13 in x 1.33 in / Output Power: 5 Watts / Audio Power: < 0.5W / Audio Distortion: <7% / Adjacent Chan Selectivity: -65 dB