Specifications: Frequency range: VHF: 136 to 174MHz UHF: 400 to 420MHz, 420 to 450MHz, 450 to 470MHz Channel: 99 channels Working voltage: 7.2V DC Frequency stability: ±5ppm Product size: 115 x 45 x 30mm (antenna exclusive) Communication distance: 5km (no shadow) Battery: 1,500mAH Li-ion batteries Transmitter: Output power: 5W (high)/1W(low) Modulation: 16KΦF3E Maximum frequency deviation: ≤ 5kHz CTCSS deviation: ≤ 0.5kHz ± 50kHz Modulation deviation: ≤ 5% Current: ≤ 1.6A/1A Modulation sensitivity: 12mV ± 3 Repand radiation: ≤ - 35dB Receiver: Sensitivity: < 0.18μV Squelch sensitivity: < 0.18μV Modulation band width: ≥ | ± 5KHz | Audio power: < 5W Audio deviation: < 10% Intermodulation distortion: ≥ 60dB Selective: ≥ 65dB Spurious rejection: ≥ 60dB Rejection: ≥ 85dB Functions: Audio function: standard audio announce of the channel, portable operation Vox function: built-in voice control launch circuit, handsfree speaking, portable operation Group-call function: which makes those ready to go into action in their hundreds Lock function: channel lock function, avoids the mistake of the operation CTCSS/DCS function: avoids the undesired signal on the same channel Automatic power save function: the machine will be in dormant style if 10 mins no launch Programming function: computer programming the channel that you want to earphone, microphone, auto-charger rabbet, expediency for answering and charging Standard accessories: Charger Battery Antenna Belt clip Adapter