TOPCHANCES Light Weight 2600mAh External Power Bank Charger for Smart Phones and Other Digital Devices Such as iPhones, Android and Tablets With USB-Blue 1,The lithium-ion polymer, long service life,more safety. 2,A lightweight, unassuming solution to life's daily power needs. 3,Long lifetime: 18650 Lion battery, up to 1000 charge-discharge cycles.1 year limited warranty. 4,Compatible with all digital devices charged via USB port. 5,Capacity: 2600mAh,Input: 5V-1A,Output: 5V-1A.