DESC: Single Line Operation Non-expandable 5 handset system (use 5 handsets through a single phone jack) Digital answering system Jumbo pre-dial font on display Large easy to use keypad Orange backlit LCD and keypad 100 name and number phonebook directory 50 name and number Caller ID history 20 number redial memory 10 pre-set ring tones to choose from 7 day / 7 hour battery performance Answering system accessible from handset 14 minutes record time Digital cordless phone with answering system and 4 additional handsets.