Cons:
-eher heavy and large
-USB Dock had to be bent into shape
-Powerbutton Works only moderately well (sometimes no reaction, without recognizable pattern off function is sometimes instead of the desired one / only the flashlight operated)
-no Instructions, packaging in brown cardboard with no label or something, little trustworthy
All in all a good product, especially at this price is always there for mobile, wireless headphones etc.