Clarity 54005.001 Alto Digital Extra Loud Big Button Speakerphone Additional Features: The Alto amplified corded telephone is the ideal solution for those with mild, moderate and severe hearing loss. This 53dB phone is the first on the market to receive TIA-4953 certification, passing the new industry standards for amplified telephones.The ergonomic volume and tone control is also perfect for those with arthritis. TIA-4953 certified for mild, moderate and severe hearing loss Amplifies incoming sounds up to 53 decibels and outgoing speech up to 15 decibels Digital Clarity Power incorporates hearing aid technology for clearer call quality Extra loud ringer volume (100 dBA) Clarity AudioCenter featuring ergonomic volume and tone control Built-in speakerphone Soft touch backlight keypad Ten (10) one-touch speed dial memory buttons ClarityLogic remote diagnostic service programs your phone at the touch of a button ...