The HD-40P provides you with over 40dB amplification; increasing sound 20 times louder. Featuring an amplified speakerphone, this phone is designed for those with moderate to severe hearing loss, low vision, and who can benefit from the ease of photo memory dial buttons. 

Product Features: 

• High-Definition Sound Technology for unmatched clarity, a new standard in amplified telephone technology
• Amplifies incoming sound up to 20 times (over 40+dB), the most powerful in its class
• Selectable Digital Tone Setting allows you to boost and enhance the speech frequencies you can't hear well, making difficult to hear words intelligible again.
• Latest Digital Sound Processing technology eliminates virtually all distortion, echo effects and unwanted static, commonly found in other amplified phones
• 9 large and easy to set up photo memory buttons for quick one touch dialing 
• Two (front and side) visual ring flashers
• 90+dB super loud ringer with adjustable ringing volume and tone controls
• Powered by the telephone line, no AC adapter is required
• Hearing aid compatible handset