Multi-Channel auto scan 46/49MHz Selectable 10 Channel Talk time - 6 hrs. Stand by time - 4 days Noise monitoring and Auto Line release Randomly generated security code 7 Ringer melodies Dual mode Caller ID (DTMF / FSK) 30 Incoming Calls memory VIP Function 40 Memory phone book 3-levels of Receive Volume Control 5 Level Contrast Adjustable Display of real & date in idle mode Pre-dialing function Colours : Black and White