Liked the concept and functions; only problem is linking and getting it to the English language. Performs well, no skips, stutters, etc. This was a birthday gift for my teen son. I have known and admired one of the authors, storyteller and writer Meg Lippert, for many years. After only wearing them for one day in an office sitting at a desk for 8hrs, they already looked a little scuffed and worn, which is a negative. More importantly there was a weight to the sound that had always been missing from the SE535. They were the ONLY thing I could wear and not be in extreme pain at the end of the day. I love the shoes , but they did not come in the original packaging. Charges fast both wired (USB type C) and wireless with any Qi wireless charger. If you are needing the exact size for a Les Paul these are not the ones you need.