The BT 7880 blocks up to 100 numbers, has excellent sound quality and is easy for you to set up. It gives you a handsfree speaker, easy to read 1.8" backlit screen and dedicated call block button. With call transfer and internal calls and clock and alarm you have all you need to stay in touch with people. The BT 7880 nuisance call blocker phone gives you back control over which calls you want to take and which you want to block. Get the most out of your phone straight away with our easy to use menu and great sound quality. For those times when you just want some peace and quiet, switch on do not disturb so that your phone won’t ring. Key friends and family can still get through by tagging them as VIP’s in your address book. Please note: You must subscribe to a Caller Display service from your network provider to block nuisance calls. Charges may apply Specifications Handsets: 2 Blocks up to 100 numbers Excellent sound quality Easy set-up Hands-free speaker Long range reception, up to 300m outdoors, 50m indoors 12 hours of talking or 120 hours standby time See and hear if you have a second call waiting Easy to read screen shows when you have messages Dedicated Call Block button Save up to 100 contacts Redial any of the last ten calls you made Answering machine: Record up to 30 minutes of messages 1.8 inch backlit screen You need to have a Caller Display service from your network provider to block nuisance calls and for text messaging features. Charges may apply. Batteries: 4 x AAA NiMH Dimensions: D 14.3 x W 10.9 x H 14.9 cm Colour: Black