The sound from this small speaker is amazing. Of course, it's still single and not of HiFi but thanks to the bellows, the bass is quite good and are holding up well. We gain a lot in audio quality to all mobile products (MP3, laptop, tablet) to the point that I do not separate myself more, there is always an opportunity to boost the sound of these sources present throughout our daily lives. All those who listen ask me the references to take one. Battery holds up well over time and quick and easy charging via USB. Improved: the included pouch should have a separate area for the charging cable. If we use this cable with the enclosure, plugs can damage the speaker.