Because of an accident, my hearing was damaged a little, so now I can hardly hear what others say to me. I went to the hospital and tried to buy professional hearing aids, but I thought they were too expensive. My friend told me that I could buy OTC hearing aids. So I bought a pair of hearing aids here to try. After I went home and put them on, I found that it really worked, and the key is that it is not expensive, and the cost performance is really good.