When dementia affects memory, making a phone call can become close to impossible. The HD-40P can make using the phone easier for the person in early or middle stage Alzheimer's, even into the later stages of the disease. It provides with over 26dB amplification; increasing sound 20 times louder. The HD-40P features an amplified speakerphone and is designed for those with moderate to severe hearing loss.It has nine buttons that can be programmed to a persons phone number, and a picture of that person is then added to the button. One touch of the button dials the person who is pictured.