Note: UK Customer support number 0800 218 2182. Block up to 20 specific numbers or turn on do not disturb mode so only your tagged VIP contacts can get through. High sound quality with adjustable volume control. Save up to 50 contacts and automatically share contacts between handsets. Easy to read screen that shows when you have messages or when you have a second call waiting. 1.6-inch amber screen. Redial any of the last 20 calls that you made.