The BT3660 has excellent sound quality, is easy to set up and lets you block up to 50 numbers. It gives you a do not disturb mode and an easy to read 1.6" backlit screen and allows you to save up to 50 contacts, control the volume and redial any of the last 10 calls you made. The BT3660 nuisance call blocker phone gives you back control over which calls you want to take and which you want to block. 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. Features and Benefits Nuisance Call blocking features - Avoid nuisance and unwanted calls with our new BT3660. Block up to 50 specific numbers or use the dedicated Do Not Disturb key to silence your calls. Easy set up and great sound quality - Get the most our of your phone straight away with our easy to use menu and great sound. Specifications Single Block up to 50 numbers Excellent sound quality Easy set up Handsfree speaker Long range reception, up to 300m outdoors, 50m indoors 10 hours of talking OR 100 hours standby time See and hear if you have a second call waiting Answering machine Easy to read screen shows when you have messages Dedicated Do Not Disturb button Save up to 50 contacts Redial any of the last 10 calls you made Record up to 12 minutes of messages 1.6 inch blue backlit screen Batteries: 2 x AAA NiMH Dimensions: Colour: Black