PUXING PX-508 UHF 400~470MHz Professional Dustproof Waterproof Handheld Radio Features： General: » Frequency Range : UHF 400 ~ 470MHz. » Working Temperate : -20°C ~ +50°C » Operating Voltage DC 7.4V(Rechargeable Li-ion battery) » Dimension : 110 × 50 × 35mm (Not included Antenna) » Weight : 226.7g (Including battery) » Antenna Impendence :50Ω » Channels: 16 » Supports non-standard CTCSS input » Voice reporting number function » VOX sensitivit setting(1-9 level adjustable) » PTT ID transmit mode optional » Busy lockout » Squelch level setting » CTCSS setting » Wide/Narrow Band Selection » Transmit end prompt » Side key definable function » Channel Scan funtion » Emergency alarm funtion » Low Battery Alert » Battery Saver » Battery Level Voice Prompt Transmitter: » Output Power: ＜5W » Channel Spacing: 25KHz » Modulate Mode:Frequency Modulate » Modulation Distoration: ≤5% Receiver: » Sensitivity: ≤-120dBm » Audio Distortion: ≤5% » Common Channel Inhibition: ≥-8dB