As a speaker at the tablet for music or video, there is no objection for me. For the price you will hardly find a better performance. The device takes plus a little space in your luggage.
But I ordered it for conference calls, and since you have to unfortunately cut back. The microphone is hidden behind a very small opening on the side and really needs to be pointed directly at the man who is speaking. Even then the voice quality is acceptable. For small rounds with two or three people on the go, it is sufficient, however.