1. Blue backlit jumbo LCD display 2. Real-clock LCD display 3. Build-in handsfree speakerphone 4. 16 Ringer sound selectable (include 8 music ringer sound) 5. Music oh hold function 6. No-disturbing VIP function 7. Rotary handsfree volume switch 8. Corded Handset with rotary volume switch 9. FSK/DTMF dual system caller id function 10.Calculator function 11.Tone / Pulse dialing mode switch 12.Ringer Hi / Low switch 13.IDD key lock