PoweRocks Stone3 7800mAh Power Bank for Cell Phones, iPod, iPad, iPhone, Tablets & eReaders Battery type: Lithium ion; 7800mAh capacity Input: 5.00.5V/2.1A(Max) USP Port #1 output: 5.00.25V/2.1A (for tablet devices) USB Port #2 output: 5.00.25V/2.0A (for cell phones and MP3 players) Dimensions (mm): 75 x 75 x 27; Includes USB cable for charging the power bank