Just buy them!
After reading about several hearing amplifiers, I decided on the Banglijian.  They improved my life! I have been able to hear sounds I have not heard for years!! These small devices fit well in my ear. I only need hearing improvement in my left ear; I can wear either device in that ear. I can easily change the way I hear in different environments such as from my home to driving. The road noise bothered me the first time I drove on the interstate. I pressed the button and chose another one of the three programs to help cancel some of the the driving noise. Also, being able to choose one of nine volume settings helps. The charging case is convenient. The devices hold their charge a long time; I wear mine from at least 7:00 a.m. to midnight. Most importantly,take the time to pick the correct size of ear dome included to fit you best for maximum improvement in your hearing.
Rating: 5 stars