product description :Double / double / double waiting Numeric keyboard / front panel programmingPTT ID Code / ANI ID Code Display Scan / priority scanPower saving / low voltage alarm 1750HZ pilot tone / nine squelch5 kinds of call ringtones LCD background displayLCD liquid crystal display / backlights Computer Programming / Wired CopyScrambling / listening / tail elimination VOX voice and sensitivity / delay settingSWideband / stepping selection / emergency channel Function selection / APO / TOTFM radioGENERALFrequency rangeVHF / UHF: 136-174 / 400-470MHZMemory channels 128 channelsOperated Voltage 7.4V (standard)Battery Life About 10 hours.Operated Temperature -30°c-+60°c.Antenna Impedance 50ΩCommunication Range about 3-5km.Dimensions 61 (w) x114 (h) x42 (d) mm (without antenna)Weight 240gOutput power 4W / 4W low power: 1WChannel Spacing 25KHk