1）All channel scan and priority channel scan2）Scan types :Carrier, time and search3) Busy channel lock: carrier/QT/DQT4）VOX sensitivity:0-9 levels adjustable5）Transmitter power：0.5W6）Squelch level 0-97）Lamp control: On/off/automatic8）Beep tone: Beep on/off9）Keypad lock function: Manual/auto optional10）Transmit limited (TOT):off-420S optional11）CTCSS and DCS settingReceive only/Transmit only/50CTCSS and 104 DCS12) Select the LED/emergency call by programming software13) Volume control knob to turn on/off the poweror turn as channels selector14）PC programming and store channel15) Charging with USB cable 5V DC or 110V/220V AC16) DC 3.7Vsingle li-ion battery compatible with mobile phone battery (Nokia mobile)17) MINI compact size 84*48*25 cm18) Battery power indicator19) Built-in digital FM radio receiver20) Frequency Space: Narrow 21) Battery save function22) Channel Name Edited23）Transmitter power：High power and low power switchable24）+/-offset:+/-frequency optional25）Offset step optional:12.5k/25k/6.25k26) Output power: UHF 400-470mhz 2w27) Channel mode and frequency mode switchable28) Repeater shift compatible: +/-/029) Transmit and receive frequency reverse30) Channel step: 25khz and 12.5khz31) Frequency Space: Narrow and Wide 普星其他型号的对讲机