Meet the BeatBringer: a speaker in form of a backpack with a lightweight design that you can carry around to enjoy your music on the go. It features an impact resistant shell, easily accessible control panel, powerful amplifier, and heavy bass. You get up to 15 hours of battery life.
The BeatBringer supports Bluetooth streaming. It weighs 5.8 kg and produces audio level of 110 dB. The speaker looks stylish too. More info is available here.