As might be expected, the quality of the V-Man is neat. The device has pocket-size so that you can easily carry it with you. Also the charging cable has been thought. It has a reeling function. So just as much cable is unrolled, as it takes just. The large number of adapters, there is no connection problems. Now comes the but. My mobile phone has a battery capacity of 1300 mAh. The V-Man was with a capacity of 1800 mAh unable to charge my phone to 100%. At 70% it was over and the V-Man was so empty, not even worked the charge indicator LED. Not necessarily so for modern smartphones suitable. Here one should be able devices with min. 3000mAh grab to be on the safe side.