Finally, a device in which one does not have to separately bring the AC adapter or a 12V charger additionally. Does this sound familiar: a Micro-USB cable you anyway while for Smartphone, and the car is always a USB port. That's why only take the charger in addition, the rest of the cables have been doing anyway.
And a great seller, there was initially a small mistake which was cleared quickly and efficiently. So I imagine competent online trading!