The audio is crystal clear, and the 7. I do wish there was a way to turn off the Bluetooth connected sound. The shippers are great! In terms of bass if you are concerned, no, they are not blow-your-head-off bassy, they are clean and punchy. I bought them as a present for my mom and she is obsessed with them. Actually no. Good luck getting a refund from a web site all in Chinese. The treble is nice. ) Cable pulls are smooth. I have a feeling it may be the end of the "arch support/heel cushion" that is shown in the images, but its odd that the right shoe has no issue.