FSK/DTMF system compatible & FSK auto-adjust real time Pre-dial 32 digits number which can be edited like mobile phone LCD displays incoming number, date, time ,sequence number and total incoming number Electronic calendar, LCD displays conversation time LCD contrast 5 levels adjustable Records 25 incoming (16 digits) and 8 outgoing numbers (max 18 digits) 33 VIP numbers setting All the memories can be reviewed, called back and deleted Auto-filter local area code, auto-add "0" before long distance number 8 melody ring and 1 ordinary ring Play ringer melody and hold on music of the melody Voice incoming number Big LCD displaying with back light 2-step lock, lock the number led by "0", open Hands-free talking and volume adjustable Auto-redial, ring back when connect Calculator function, anti-steal dialing 5 alarm clock Redial, pause, P-T flash function Anti-EMI function