1.8GHz/2.4GHz Frequency 75 Channels Digital Sound Quality 15 Rings Selectable Multi-languages Display (English, French, Italian) Support up to 4 Handsets 40 Groups 24 Digits Phonebook Memory 50 Groups 24 Digits Incoming Number Memory 10 Groups 24 Digits Last Number Redial 1 Group Alarm Set with 5 Rings Melody Call Transfer between Handsets Third Conference Handset Speakerphone Function Talk Time 8 Hours, Standby Time 100 Hours