The hearing aids were as shown in the adds, I didn't want the type that fits behind the ear as I've always had a shaved head and wanted something more discreet, my hearing is moderate, as I don't need people shouting at me, but I do need the tv volume reasonable high, which was annoying for anyone in the next room, I tried them by lowering the sound on the tv so that I could hardly hear it, then fitted the hearing aids in and found that I could hear the tv clearly, yes there is a slight hissing...