Increases the incoming voice by 40+ decibels. Adjusting the graphic equalizer to meet your comfort level gives you louder, clearer and more understandable conversations. One push button activates the amplification. When hung up, the graphic equalizer will automatically turn off to protect the hearing members in the family. A cover protects the equalizer from unwanted changes. The electronic circuit eliminates background noise and suppresses feedback and distortion. It has a super loud ringer up to 95 dB with selectable tones. Powered by the phone line, no AC connection necessary. Thirteen number speed-dial memory including three one-touch emergency buttons. Dual phone jack to connect an extra ring signaling device. Hearing aid compatible. One year warranty.