This Talking Caller ID Speakerphone announces the number of who's calling in a loud clear voice while the easy-to-read display shows the phone number before you answer. It's perfect for seniors and the visually impaired. It has extra-large buttons, 20 ringtone selections, easy to adjust speaker, handset volume control and a dozen other handy features. Requires 3 AA batteries (not included). Requires caller ID service from your local phone company.