I've had moderate to severe hearing for quite a few years and have had several different hearing aids. When I received these, and started wearing them, I couldn't believe that I could hear so well. I always had trouble when riding in a car in the back seat. I couldn't hear the folks in the front seat at all. My wife and daughter both talk softly. Well when I put these in , I could hear them both immediately. I've had these since 11-2, and am totally happy with them.