there are things that were needed as a port for a micro or usb, only a micro defect a sound that emits sometimes an interruption but of a second, these last days that I have used it has not been presented, I give it a ten for sound duration and design of the product I loved totally satisfied, I have not tested its impermeability but it shows the good material, very happy with the purchase more than 4 months of use, the interior mode, sharp bass, good sound and the external mode the bass are reduced considerably, but without affecting the sound quality, understandable by the excellent outdoor sound expansion product I'm not complaining.