Kanex GoPower Pocket - Universal Portable Power - For Smartphone, Digital Camera, e-book Reader, Fitness Tracker, USB Device, iPhone 7 - Lithium Ion (Li-Ion) - 3000 mAh - 1 A - 5 V DC Output - 5 V Input

Through an easily controlled reaction, Lithium Ion (Li-Ion) battery chemistry delivers sufficient energy to the smartphone 5 V DC battery ensures a steady and constant electric supply to the device Charge your device anywhere anytime with its powerful and portable nature Delivers a long lasting charge with the capacity of 3000 mAh