Dual Mode FSK/DTMF CLI Compatible, 16-Digit LCD Display with Blue Back light. Adjustable LCD Screen, 99 Nos Incoming Call Memory, 18 Nos Outgoing Call Memory. 3 One-Touch Memory, 5 Kinds of Normal Ringing Tone for Selection, 4 Kinds of Polyphonic Ringing Music For Selection Display of Incoming number, New Call, Repeat Calls, Real Time & Date in Idle Mode Two ways Speakerphone with adjustable Receive Volume Control, LED Indication for Ring / New Call.