FeaturesWorks with all landline providersLarge 1.8\" backlit screenEasy to use big buttonsBlock up to 10 buttons & save up to 100 contactsHands-free speakerBT 4000 BIG BUTTON NUISANCE CALL BLOCKERThe BT 4000 Big Button DECT Cordless Phone features an easy to use big button phone that blocks calls from specific numbers or call types.STRUGGLING TO ENTERS NUJMBERS ACCURATLEY, READ THE SCREEN OR HEAR CALLERS? This is the ideal phone for anyone with sight, hearing or dexterity challenges. The big buttons and large screen with amber backlit will ease the frustration of entering numbers incorrectly or misreading messages. It\'s hearing aid compatible and you can even boost the volume of your caller\'s voice to make sure you can hear them clearly. FED UP WITH NUISANCE CALLS? You can choose to block specific call types, like international and withheld numbers which account for a lot of unwanted sales calls. You can also block up to 10 specific numbers you don\'t want calling you. WANT TO TALK HANDSFREE? Handsfree lets you talk to your caller without holding the handset, so you\'re free to get on with other things, make notes or let other people in the room listen to the conversation over the loudspeaker. NEED SOME PEACE AND QUIET? The do not disturb feature is great for when you need some quiet time, just turn on and your phone won\'t ring or light up. You\'ll receive calls silently with minimal notification.