One-touch Call Blocking button Block up to 1000 numbers Answer machine with up to 30 minutes digital recording time Phone will work even when the power fails Hearing aid compatible 200 name and number phone book Hands-free speaker phone Mute your caller so you can have a private conversation with someone nearby Redial from the call list Flash for network functions Tone dialing Time and date facility Caller ID shows you the number of who is calling and stores the number of at last 30 callers in the call last Call Timer display the duration of external calls