Phones can do everything we need (or almost). They just not Nont battery enough to do all day! Most of the time my phone lasts a day especially if I will use that as often. However, it often happened to have mest need my phone and noticed that he had ny more battery to last the rest of the day. This emergency charger means I can use my phone all day with calm mind without bothering to me that if in case I dont have enough of energy, there is always this emergency charger in my bag.
It seems just like a normal case and has a flap to protect the screen. There is also a convenient window to show the messages and callers, a convenient feature that i find is that you can answer calls using this screen, which means that the cover should not be always be open for use phone.
It is a little thicker than a standard case but you can load it up and place it in your bag until you need them in your standard case.