- 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 Powerâ„¢ incorporates hearing aid technology for clearer call quality- Extra loud ringer volume (100 dBA) - Large tilting LCD display with large font- Clarity AudioCenter featuring ergonomic volume and tone control- Built-in speakerphone- Soft-touch backlight keypad- Three (3) one-touch speed dial memory buttons- ClarityLogicâ„¢ 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 manufacturers warranty