The Gigaset A415A Trio has space for 100 contacts, allowing you to call them from this landline phone without having to remember all the numbers. If they call you, you'll see their phone number on the screen thanks to caller ID. Missed a phone call? The answering machine will record voice messages for you. The phone also stores phone numbers for the last 25 missed calls. The keyboard and screen are backlit, so you can easily use the device in low light. In addition, you have the option of setting an extra large screen font.