Anticipation My only complaint: It lacks a manual. But you get quickly out how it all works - and it all works really as expected.
I tested with a Galaxy Ace.
Can search Bluetooth devices via mobile phone, sometime should then S10 (which is the speakers) appear in the list, connect, call MP3 - and indeed:: First off, for Bluetooth is all transmitted and play correctly. And that in a volume that can be so good sound for a 20 square meter space (the volume can be on the speaker and on the phone rules). One can move away from the phone have 10m - as long as one remains in sight (just Bluetooth), does not break the connection off too. You can even jump thanks to Bluetooth via controls on the speaker to the next song or press Pause (the same or similar for audio books).
In addition, you can use the speaker as a speakerphone for calls (integrated microphone) - works together with my phone without problems.
With this USB charger cable, the same as an AUX cable (plug) is used. So you have not heard about Bluetooth.
Then there is a card slot which receives micro SD cards. My 8-GB card is easily recognized (and indeed everything that had to MP3 it - no matter what order). Backward and forward navigation also works here.
What can one say to the speaker?
The sound is very good in my opinion and the volume already unusual for this size. The sound is still full, if you put the speaker eg a wooden table.
I read again and again that the bass is criticized in the small boxes. Something I can not quite understand. Clear the bass is at twice the boxing better - and who expect too much here, is likely to be disappointed. But I also do not complain that Polo is slower than a 911. From my perspective, price, equipment and sound for the size are outstanding - and the part can even make a very high-quality impression (appearance / weight) and a lot of fun.
Finally, the comparison with MobiWave Master and the smallest Music Man (dice) which I have two at home:
Here is my view very clear this front speaker.
The Mobi overridden fast at full volume or rattles (at least my two copies) - that the bass is still minimal full. But what good is that to me, if I can only hear with medium volume.
The Music Man is a whole lot quieter and the sound a little thinner.
So for me, a strong buy recommendation. I would make a point for the lack of operating instructions and the missing headphone jack (whether this will work via Bluetooth also, I did not try) off - but he gets for sound and equipment 6 star, giving it a total score of 5 stars.