2.4g digital channel, talking clear, long range talking, 89 channel auto-choice, safe digital transfer, 1 base up to 4 handset, FSK/DTMF system display, Chinese-English segment display, handset talking with handfree, handset to handset talking and transferring, 3 level ring volume adjust and close funtion, 24 digital pre-dial, revise, pause function, mute on handset, up to 24 digital number, LCD backlight, LCD date/time display, 4 level LCD bright adjustable, alarm clock, 40 group incoming check, 24 digital 10 group outgoing check, record 24digital 10 group number, local call setting/control incoming, handset battery check, 3 level display, low power alarm, auto-power off, 5 level receiving volume and 6 level hand free volume, flash time function, single redial function, combination check function, talking time compute, out of range alarm.