I found this review very useful in knowing all the possible details, have a look if you like:
(COPY BELOW LINK AND PASTE IN BROWSER)
Full Review of Boat Stone 200 Portable Bluetooth Speaker
[ https://goo.gl/DH3Ej5 ]
Recently purchased and found that’s its well beyond the expectation. Battery life is superb and sound is clear and quite good amount of bass that you will not see in such price segment from other brands.
only drawback found was not so good connectivity, if you go to other rooms sound breaks intermittently though connectivity remains alive.