The back is just a chain and hook for a few inches, so it’s not a solid belt all the way around. I tried to charge them, and nothing happened. Im not regretting the buy -- I really wanted decent sounding WIFI connectivity due to where they are placed and these have exactly what I needed. value for money product exact replacement for devices we had. Suppose only bad thing is the THX Spatial Sound requires you to buy that feature for $30 and its not supported by a lot of games :( But Im sure that will change in the future. Tienen NC(NoiseCancelling) no es como lo esperaba puesto a que es la primera vez que trato con esa opción pero la verdad si se nota la reducción de ruidos exteriores y se agradece para disfrutar la música. these dont fit into my ears well, no matter which silicone tips i try. My plan is to follow my own directions above and get another pair of sneakers. They charge fairly quickly and hold the charge.