The unit is very compact, but not completely flat, but rounded. Thus, it is not flat, if I put it on the wide side. This may look nice and even better in the hand and is likely to be provided also probably meant to the narrow side of the device, but I put it back and but prefer it if nothing wobbles. Even the soft-grip coating does not like it so much. That will quickly dirty.
The USB ports are a perfect fit. It fit in all kinds of cables from different manufacturers. They can be plugged easily and hold still. Just as it should be. Also they fit properly together, although even a cable is slightly thicker. You get it anyway middle pulled with his fingertips.
The charger itself is connected to mains plug with the mains supply. It is also supplied to the Euro plug British version. To me this is a waste, but since this is not the only manufacturer. I had often what not makes things but better.
Conclusion:
A well-made, really fast and smart charger with very little weaknesses. Still highly recommended.