BJ-V77 have the belowing function: 1.frequency range:FM 87-108 MHZ(receiving) 136-174MHZ (receiving/transmitting) 350-390MHZ(receiving) 400-470MHZ(receiving/transmitting) 480-520MHZ(receiving) 2.Working mode:frequency mode,channel mode 3.Voice encryption set(optional,4groups and single group) 4.voice guide 5.digital FM radio 6.bright flashlight illumination function 7.FM channel auto searching and input 8.DTMF signalling system 9.distant and spot alert 10.All calls,group calls and selective calls 11.Inspection,monitor,stun and kill 12.50 groups CTCSS,105 groups DCS 13.non-standard CTCSS editable (from 60HZ to 259.9HZ) 14.Transmiting CTCSS/DCS and receiving CTCSS/DCS can be edited respectively 15.time to timer 16.Frequency step (5k,6.25k,10k,12.5k,25k) 17.Multi battery save mode 18.VOX function 19.Wide/narrow bandwidth selectable 20.Busy channel lockout 21.Low battery alert 22.Auto backlight 23.Auto/manual keylock 24.Three channel modes display(frequency mode,channel mide,channel name mode) 25.ANI code and decode display when called 26.ringing alert 27.DTMF sidetone switch 28.Three kinds of scan mode(time.carrier wave and search) 29.PTT-ID function(BOT,EOT,BOTH) 30.Multi kinds mutes modes(QT,AND ,OR) 31.Offset direction can be setted only in frequency mode 32.Offset frequency can be setted between 0-69.9875 mhz 33.Opening MENU items directly through keypad 34.Frequency,channel,MENUfastsearchfunction 35.ChannelParameterscanbesettedinfrequencymode 36.128 menory channel 37.Reverse frequency 38.wire clone function 39.PC programming