Clarity's D703 amplified telephone offers great features for both hard of hearing and low vision users. It provides up to 35dB of amplification as well as an easy to see back lit keypad with large font and high contrast numbers. Clarity Power™ technology minimizes background noises and eliminates feedback and distortion. 4 different tones settings allow the user to customize their listening experience. Additional features include extra loud handset speakerphone, 10 speed dial buttons, adjustable ringer volume, super bright visual ringer, and direct connection to assistive listening devices or 2.5mm headset. Expandable up to 4 additional handsets.