The cover has a very good feel and is well processed, no disturbing burrs inside or outside. There are cutouts for all elements of the iPhone, so this actually can always remain in the case. However, if the cut-out for headphones / headset should be too small, a small adapter cable is included, with it goes - someone has thought fine. Because the cover is made of plastic, I could not notice any negative impact on the reception. Four white LEDs on the back of information on the state of charge, is charged via a well enclosed micro USB cable.
I think that covers prima - it hardly contributes to, does not interfere with the function and extends the runtime tremendously. And if things do not need, it is solved in an instant by the device.