<p>The Ameriphone CLS45i, by Clarity, features Clarity Power? technology which makes everyday telephone conversations not only louder, but also clearer and easier to understand. </p><ulk><ul><li>Clarity Power? technology </li><li>Amplifies incoming sounds up to 40 decibels </li><li>Adjustable incoming volume control </li><li>Adjustable tone control (600-2400Hz) </li><li>Speakerphone in both handset and base </li><li>Call Waiting Caller ID with 50 name and number memory </li><li>Large lighted dial pad in both handset and base </li><li>Bright visual ringer in both handset and base </li><li>Hearing aid T-coil compatible handset </li></ul></ul>