The ecase is a portable power bank with a cigarette case, and it is designed for the pressing needs of the smokers when they go out. The battery capacity of the power bank can reach up to 2200 mAh, which can make your dying mobile phone work for another many hours. The cigarette case on the back side can contain as many as 11 cigarettes, and you can comfortably slide down to push the cigarettes out. As it is very compact, ecase fits well into a hand and can be easily carried. The ecase is an indispensable device for the smokers.