After a lot of research and review reading, I bought these. Once I placed them in my ears they fit securely and the sound came through crystal clear. He really needed a shoe rack to hold a majority of them. Just not more than that. Why did they change them. I have other battery banks to do that. Bought these for my wife who is an ER nurse. I tried some songs from you tube and that led me to put up to date my smart tv, which I hadnt used it that way before. This isnt the case with some other OTG adapter designs. Ill continue to use their products and tell others as well!