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. not compatible with any headsets 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 Redial any of the last 20 calls that you made Box Contains : 1 x Base Unit including charger, 1 x Handset, Rechargeable batteries, 1 x Mains power adaptor, 1 x Telephone line cord, User Guide