Internal Battery type: Li-polymer 
Capacity: 4200Mah 
Size: 110mm X 70mm X 15mm 
Net weight: 172g 
Input: 5V,2.1A 
Output: DC 5V,500mA
Color: black                                                                                                                                 Power For:
•Smart phones: iphone, samsung, blackberry,HTC,Nokia,etc with USB charge
•pods: ipad, samsung tablet
•Digital products: GPS,PDAs,MP3/MP4 Players, Bluetooth headsets and other portable device that has an option to charger via USB