Motorola MD481 2.4 GHz Digital Expandable Cordless Phone with Three Handsets, CID, ITAD Digital answering machine, Battery Backup--4 AAA Batteries Needed (sold separately) Caller ID with visual Call Waiting, Headset Capable Handset and base speakerphones, Custom Ring Based on Phonebook (22) Walkie Talkie Function, 3 Way Conferencing Handset Locator, 50 Private Phone Book Memory Locations in Handset