This is the latest craze amongst youngsters and you should get one for yourself unless you do not want to feel alienated. Connect your favorite music player with this speaker via Bluetooth and hear the rich sounds emanating from it. The folding top of the speaker also contains solar sells. This means that you never need to use a battery to power it, as long as there is a steady stream of sunlight available. The 2.5 W delivered by the solar cell provides adequate juice to power the speaker. However, in case you want to use it where there is no sunlight, then you have the option of using three AA batteries.