In the title it says portable speaker, which mean that we can take her in principle, everywhere! ride in the forest, in the car, on the street etc ... It is the principle of the laptop! that is like a cell phone that we can take it anywhere, where you want! Attention and there, this is not the case! because it is mandatory to connect it to a wall outlet, so that the speaker works. If no electrical connection, no sound, nothing more! So where is the interest of writing it is portable, so it did not! We look forward to his pig and when we receive it, we realize that it is not what is written in the description! it's a shame! Yet it has a very beautiful design. The Bluetooth works well with a phone. Attention also, the "Output" which is located at the back which clearly indicates "DC Out" which mean that you can recharge over his MP3 for example, but in no case the "output" current can be connect with a suitable cable, a cigarette lighter, for example. This is a current output not input! The nuance is there and it makes all the difference. It remains yet very cute to watch. Too bad it does not fulfill the function attributed to him. Unfortunately, back to the seller via amazon. Amazon is an excellent site that I recommend without hesitation. This site is perfect.