Main Function Frequency: UHF400-470MHZ Monitoring, scrambling, busy lock, companding, scanning and other auxiliary functions (Receive/transmit) Non-standard mute function FM Radio function Special signaling (frequency hopping) has stronger anti-interference ability 16 storage channels Wide/narrow band compatible 50 sets of CTCSS, 105 sets of DCS Transmit timeout limit TOT Computer programming. Read/write frequency password protection function Type-C(for programming use) Support TF card to play audio, support MP3, WMA, WAV format, support single track cycle Voice broadcast and prompt Bluetooth-compatible connection 120dB sound quality Available with AA battery, power bank (not include Package List 1*Radio 1*Remote Speaker Microhpone 1*Charger