Super quick charging, really conveniently sized and has a fantastic build quality. Amkerh always makes solid chargers and this was perfect. I'm not a fan of the big, bulky and often heavy powerbanks so this is perfect. My phone has a 4,000mAh battery so 5,000 gives me a solid charge and bit. Which for me, never far from a charging cable, is plenty when I need it. I do find however, that it takes a while to charge back up after uses. This is no issue, but is worth noting as you need a good hour or two to charge it up full before using on with phone. Those with larger phone batteries would definitely need a larger bank, but as I said, for me it is perfect.