USTOP&trade;Light Blue Heart Shape 2600mAh Cell Phone Portable External Battery Power Bank Backup Charger Pack for iPhone 5, 4S, 4, 3GS, iPod, iPad, Mini; Samsung Galaxy Note & Tablets, S4, S3, S2, Capacity: 2600mAh Cell: 3.7V/18650 Input: 5V/1A; Output: 5V/1A Charging time: about 5 hours Cycle life: at least 500 times