The AT&T 2-Handset Answering System with Caller ID & Call Waiting is a pleasure to use! The speakerphone allows both ends to speak and be heard at the same time for conversations that are more true to life. The LCD on each handset is extra large for easy viewing. High-contrast black text on a white background provides for an easy-to-read screen to view incoming Caller ID or review call history. The lighted keypad also allows for easy dialing in low-light conditions. Enlarged font and extra-large backlit keys make the keypad easy to use. This feature is especially helpful for those who are visually impaired. The phone system can be expanded to a total of 5 handsets.