was just curious about it ,but big and bulky not good thanks .
Well, it has an 8400mah battery, and I doubt it is very high density, so you would have to figure it being a bit big. I think they just pop a USB selectable voltage pass-thru on it. It looks like it would be a decent little battery pack, but I do prefer the innokin box that is coming out. innokin is a decent company too.








