I have been using this product for a long while. I can say this works really well. It has 3 USB ports to charge up to 3 devices on the go. There is a solar charger too, but I do not use it much since I can just plug it into my charger. It has a built in light so you can use at night if you need to look inside your bag for something. Charges really quick and takes awhile to drain the battery on this one. Overall, very happy with this power bank.