Advantage: This thing is really super small, yet very chic. The connection with several iPhones went smoothly and easily. One can because almost nothing wrong.
Disadvantage: The sound is really more so la la. For audio books, it is ok, music I would thus permanently not want to hear. I'm really no one who insists on clear sound or hear out a distinction between gold and not gold-plated speaker cables. It's just all "thin" next to the bass.
However, one must lead the price and size in mind. In this respect, there are 4 stars. For listening to audio books in the kitchen or in the bathroom of the speakers is enough perfectly. Sonication parties or the garden is thus not possible or is not advisable.