This phone not only increases your voice up to ten times (20 dB) louder so the other party can hear you clearly, but also has Easy-to-see oversized keypad buttons for those with Macular Degeneration, AREDs or who visually impaired. In addition, the Dialogue XL-25s has the following features: Automatically resets the outgoing amplifier when you hang up. Returns to amplifier setting with the push of a button. Hearing aid T-coil compatible handset. Large, easy to see dialing keys. Adjustable loud ringer. 12 memory speed dial buttons. Desk or wall mounting.