Superex&reg; 2200mAh Wallet Size Power Bank Portable Small Battery Charger With Built-in Micro USB Cable for Samsung Galaxy S/S2/S3/S4/S5 Note 2/3/4/5, Android Phone White Portable small power bank with Built-in micro USB charging cable for Android devices. Pocket friendly wallet size portability (3.8"x2.4"x0.3"in) Smart charging capability, simply connect and charging will begin automatically. Smallest thinnest smart charger on the market Electricity-Saving function,Grade A li-polymer cells and premium chips ensure the highest quality and reliability. Great for emergencies, traveling, outages, and many other situations, easy to use, quick to charge