- 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 - Clarity VoiceAssist for talking keypad and talking Caller ID - Oversized bright visual ringer - Headset neckloop and bedshaker ports - Battery backup lets you make calls when the power goes out - TIA-1083 compliant for hearing aid compatibility - One (1) year limited manufacturer's warranty