... &400-470MHz (RX/TX) SOS&IP55 DTMF function FM radio&Jacklight W/N band (25KHz/12.5KHz) we are the manufacturer ... CTCSS scanning VOX function SOS disaster rescue function Ultra bright jacklight function Low power prompt Chinese/English voice prompt FM radio ... mode Dustproof, waterproof degree: IP55 Technical parameter dual band radio,jacklight&SOS&DTMF