No speaker this small or this well-priced should be able to produce this good a sound quality. THe volume can be really loud (if required) or quite low (which is ideal for my daughter to go to sleep to). The speaker (at low volume) lasts over 13 hours but not much more. The good news is though, if we forget to charge the speaker it will work whilst charging up, although the red led can be a little intrusive in a dark bedroom. My daughter loves it. it is so much better than any previous speakers we have had.