1: doesn't pair quickly. It can take minutes or not pair at all.
2: no explanation about what the buttons do. You have to guess from the pictograms.
3: needs a link to order/buy other physical props. (Caring case, adult pads, and kid pads.)
4: pads need to chick into either headphone jack or power jack.
5: When you go to the website site price need to show in "$" and not just "£"