The sound quality is very good. Also high and low tones can be heard clearly and without distortion. Recently I have connected the speakers to the PC and looked with work colleagues a movie. These were surprised by the performance of the small box. It is no trouble supplying a small barbecue party with music. The battery life is sufficient. Even after 8 hrs. The box is on.
However, the audio cable is a bit short if you want to connect it to the PC. When connecting the mobile phone, it is but adequate. To load I would have liked an adapter for the power outlet, so you always need a USB port. The included user manual is indeed only in English, but the device is very easy to use. Even without knowledge of English will find their way quickly.
Conclusion:
For this price, the performance is outstanding. The sound is the hammer and comfort on the cable length and the English instruction time. 5 stars for this great product.