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Big button for easy dialing Volume control on handset Up To 40db Hearing aid compatible 10 two-touch memories for speed dialing the memories are backed up for life even if the unit is unplugged from the line 2 one-touch speed dialing the memories are backed up for life even if the unit is unplugged from the line Red 911 emergency key. This number is backed up for life even if the unit is unplugged from the line Bright LED for incoming calls Flash key for call waiting Redial / Pause Key Mute key Ringer hi/low switch Store Key on back of phone to prevent memories accidentally being erased or changed Desk/wall mountable FCC approved