Chic? Yes!
Practical? Yes!
Also compatible with other devices? Yes!
So why only four stars?
Firstly, I have every time the hard case from my Iphone puzzles in order to use the PowerTube, on the other hand he is to again "reload" My phone's flat.
This makes it convenient if I know I am the day on the road and can not load, totally unsuitable for a more than one-time Recharge Required vacation with backpack in the outback but my phone.