IRADIO I568 VHF 136-174MHZ walkie talkie + earpiece

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IRADIO I-568V VHF 136-174MHZ walkie talkie + earpiece Output power ：5W Frequency  VHF136-174MHz 128 channel capacity VOX Built 50 CTCSS and 104DCS busy channel lockout proyammable channel space (25/12.5KHZ) FM With emergency alarm Keypad lock Opening greeting English sofware programming Specifications: Item number I-568V General Frequency Range VHF: 136-174MHz Channel Capacity 16 channels Channel Spacing 25/12.5KHz Phase-locked Step 25KHz Operating Voltage 7.4V  DC ±15% Battery Life More than 14 Hours (1200mAh), by 5-5-90 working cycle Frequency Stability ±2.5ppm Operating Temperature -20°C +55°C Size 97×56×30mm (without antenna) Weight 184g (wthout antenna) Receiver (ETSI EN 300 086 standard testing ) Sensitivity (12dB Sinad) ≤0.25μV Adjacent Channel ≥70dB 　 Selectivity Intermodulation ≥65dB Spurious Rejection ≥70dB Audio Response +12~-19dB(0.3~3KHz) Hum & Noise ≥40dB Audio distortion ≤5% Audio power output 500mW / 10% Transmitter (ETSI EN 300 086 standard testing ) Power Output 4W/1W Modulation 16KΦF3E Adjacent Channel Power ≥70dB Hum & Noise ≥40dB Spurious Emission ≥-36dB Audio Response +12~-14dB(0.3~3KHz) Audio Distortion ≤5%