Nuisance Call Block with Dedicated Call Block Button. This feature allows you to input and block phone number prefixes to stop all nuisance calls with matching prefixes such as from telemarketers and prefixes of freephone numbers. A dedicated call block button allows you to easily and reliably register a phone number to your block list by simply pressing it when the phone is ringing or during a nuisance call. Easy-to-Read Illuminated Full Dot-Matrix Display. The screen is capable of displaying clear letters and numbers, making it highly legible. It also shows you all the required information, according to the situation. Speakerphone allows Comfortable Hands-Free Calls. Hands-free calling is a must when taking long calls. Talk while doing other things or share your conversation with your family. Answering System. The answering machine records messages up to 18 minutes long, so even if you are out for a day you never miss an important message. You can also remotely check your messages while you are away. Good to know- With the dedicated Call Block key, spam calls are a thing of the past - block specific numbers or groups and those pesky telemarketers - Get work done while you're chatting away thanks to the handy speakerphone function - Never miss an important message with the 18-minute long answering machine - you'll be in the loop even if you're out for the day- The illuminated display screen with full dot-matrix shows letters and numbers clearly, so you won't need to squint - Always wake up on time - the advanced alarm clock features a snooze function to make the transition from bed to reality a little smoother Please note: You must subscribe to a Caller Display service from your network provider for the nuisance call block and caller display features to work. Charges may apply.