This item is pretty simple and straightforward. These are just fantastic. The cover fits very snugly, has openings for the charging cable and the indicator LED can be seen to monitor battery charging as well. This heel has many great reviews which is why I overlooked the bad ones. But shes been crazy about these beads recently. The reason for the bad rating is because the website says it is 30 inches across. The powerbeats did as well, but I honestly prefer the sound from the Skullcandy over the beats. You can?t use a standard Allen wrench to install it, you need to use their specialty Allen wrench and the one they sent me didn?t work so I needed to use my grinder and drill bit to make it work . I have somewhat wide feet so theyve taken a few long work shifts on my feet to get comfortable, as they felt a bit narrow at first. Took about 30 minutes to assemble.