The case is rubberized and hardly any fat delicate, the ground has a non-slip mat. Nothing wrong with that. All connections and the status LED are on the back - if there is a back in a cube! On top you will find the control buttons for Bluetooth operation, which do not act all in AUX mode.
When charging the battery, a red LED, a green when the battery is fully charged lit. That is the minimum equipment that is but adequate.
Bluetooth works without problems. The assured me my daughter - and their statements are credible. I myself have had to take the cube only against my 120W stereo speakers. Of course, it was clear from the outset who wins. But if one does not compare so directly, the sound of the cube is very decent.
Positively surprised me the battery capacity. Even after a week as PC speakers, the battery was not empty - and, without being able to turn it off in AUX mode.
Conclusion:
I am quite happy with the Rubik's cube, so '5 Stars! If you "not helpful" find this review, do not hesitate to bother and leave a comment rather than a dull, meaningless set to "Abklick"!