Hello, I am going to review on this powerbank.Trust me this powerank is very very rich product.If tou compare to alll other powerank in its price I think you will uable to find such type of powerbank.Best product very good charging capacity once you will charge this it will charge your phone at least 3 to 4 times when your phone power percentage is on middle.This varient of is 10000mah and its one more varient available of 20000mah.User friendly you have not to press the power button when you want to charge your phone it automatically detect and starts charging and also aumatically detect tht attery is fully charged and cuts off of the power.Hope you like my review.ThankYou