The 76593.000 P300 Amplified "Photo Phone" (18Db), By Clarity Features Clarity Power Technology To Make Sounds Not Only Louder, But Also Clearer And Easier To Understand. With Up To 18 Decibels Of Amplification And Programmable Photo Memory Buttons, The P300 Is An Ideal Solution For Those With Mild-To-Moderate Hearing Loss Or Low Vision And Features Include Adjustable Incoming Volume Control, Bright Visual Ring Indicator, Extra Loud Ringer (75+ Db), Large, Easy-To-Use Dial Pad And Is Hearing Aid Compatible.