The sound quality in listening to music, etc. The computer was one of the main features we were looking for. Its clear, clean and crisp. But if you do buy these get 2 of them bc they sound even better paired up. So, I have been using Shure SE215 models for years. I recommend a socket set or box wrenches along with an adjustable wrench or "Channel Locks. Not to mention it helps that everything is closed inside so you won?t see the clutter or mess. I love the little case, itll be so handy just to keep them in there inside my gym bag until theyre needed, it takes up hardly any room but also it charges them! Just like the OEM one. Tried them on initially and thought they might be too small, but, figured that after a while, theyre going to stretch out.