iradio I-620 portable walkie talkies ,two way radios , transceiver,2 way radio VHF 5W UHF 4W FM radio Built-in 50 CTCSS and 104 DCS, end-tone elimination Wide (25kHz) and narrow (12.5kHz) channel spacing choose With VOX Scan function with all channels scan and priority iradio I-620 portable walkie talkies ,two way radios , transceiver,interphone Technical specifications: Frequency range: 136 to 174MHz and 400 to 470MHz Channel capacity: 16 Operating voltage: 7.4V Li-ion Working temperature: -20°C to +60°C Frequency stability: ±2.5ppm Size (without antenna): 58 x 105 x 35mm.Transmitter: RF power output: low: 1W and high: 5W Modulation type: F3E Stray radiation: >60dB Adjacent channel power: >55/65dB Maximum frequency deviation: ±5KHzAudio distortion: ≤5% Modulation character: ±3dBReceiver: Sensitivity (12Db SINAD): 0.2μV Adjacent channel selectivity: ≥60dB Noise respond: ≥60dB Audio power output: 500mW Audio distortion: ≤5% Standby current: ≥25mA. I-620 two way radio two way radio battery two way radio package Hot sellingiradio I-620 portable walkie talkies ,two way radios , transceiver,interphone