dCables Sleek 4500mAh External Battery Pack for Smart Phones and Other USB Charged Devices - Lightweight Power Bank Charger and Backup Charger for iPhone5, iPhone 5s, iPhone 5c, iPhone 4, iPhone 4S, nano, iPod, Samsung Galaxy S4, Samsung Galaxy Note 3, Google Nexus 5, HTC One X, Blackberry Z10, and More Power Bank charger holds enough power for 2-3 charges on an average smart phone - 4500mAh Hideaway micro USB cable attached so no extra cables needed to charge a phone that uses a micro USB charging port Additional 12 inch USB to micro USB charging cable included so you can charge the Power Bank from a laptop or any device with a USB port Power Bank weighs less than .25 lb and has a slim design for pocket sized portability- Piano key white glossy finish with stylish mirrored accent MicroSD slot for transfer of data back and forth from your computer to MicroSD card