Appearance: looks in the matt black really high quality, also the supplied flat cable fits well visually to Haptics: feels very valuable, is not too easy to look cheap, but also not too heavy, so the portability at any disadvantage. Function: the LEDs are very decent and show depending on how many flashing them simultaneously, the current charge status. Once charged, I can so that my smartphone ca recharge 1.5 times. The UV lamp is in my opinion, unnecessary, since the check of bank notes and the charging of batteries are thematically not quite so close. Is nothing more than a nice gimmick. A flashlight with white light, about to illuminate the USB - socket in the dark, would have pleased me better. Therefore, a point deduction.