Specifications: * Intput: 5V==0.5A * Output: 5V==0.5A/h * Capacity:4200mAh * Weight:112g * Charging time : 9hours * compatible device:APPLE IPHONE 5 & 5s ( IOS 7 is available) Using Tips: * do not drop or bump, do not put into the fire,hot temperature and water * The sleek power pack snaps inconspicusly onto the back of your phone,adding only a few millimeters of thickness, but more than doubling the battery runtime. * High class material to protect your iphone 5 ,charging and protecting 2in 1. * You can use the our External Battery to make your phone battery life last longer Accessories: *Power case x1 *User Manuel x1