v 10 channels auto scan; caller ID FSK/ DTMF auto- compatible; v Base and handset green back-light display v Base unit voice paging and voice talking function v Base unit 33 / handset 40 melodies ringer including 3 real songs or off selectable; ringer volume adjustable v Base unit 45 / handset 50 incoming memories v Base unit16 / handset 10 outgoing memories v Base unit / handset ringer volume adjustable v Base unit / handset alarm clock function v Handset keypad controls power on/ off v Adapt 1-3 handsets optional v Intercom / page / call transfer between base unit and handset v Local code filter v Handset low battery indicating & alert; handset out of range alert v Handset auto transfer call to base unit in case of sudden power off v Pre-dial function / 4 key tone selectable v VIP incoming ringer settable If you do be interested in them , pls don' t hesitated to contact with us directly .