Zivonics Swift 10k (10000mAh) power bank. Specially designed for Smartphone and all digital devices. Built-in Li-Polymer battery with more durability provides better charge retention, high Performance and also lightweight and sleek design.Swift 10k is a 10000 mAh lithium polymer power bank. It comes with Portable charger with dual output Lithium-ion cell. Swift 10k consists dual output and a perfect backup source of power for your mobiles and other gadgets.