The battery is meticulously crafted. The case is slightly rubberized, so that the battery is firmly in your hand. The materials are top and have no unpleasant odors.
The small size makes it a mobile companion, which you really can stow everywhere. Additional mobile energy is finally getting well.
Very handy, I find the additional function with the UV light. For this, simply hold down on the side of the button. Whether it absolutely must be UV and not a normal LED and its purpose would have met, was once an open question. But the fact is, very convenient in everyday life, if you need short light.
I use this battery to the iPhone 6. There is no error message and the iPhone is loaded with just under 1% per minute.
Important at this point; charging does not start automatically, but you have to push the button on the side once.