iEnjoy Portable Flash Charger - 2600mah Universal Power Bank External Back Up Battery Charger w/ USB Output, Black Compatible with most Smartphones, E-Readers, Tablets and other devices USB output and Micro-USB input, High capacity battery: 2600mAh Adds up to 40 hours of extra talk time, Rechargeable, small, attractive, and lightweight Great for commuting and travel, Includes USB-to-Micro-USB cable for connecting and charging the flash charger via your computer Available in your choice of fun colors! Black - Silver - Pink - LightBlue - Purple & Blue