Shirui C62 thin Aluminum 6200mAh li-polymer Charger External Battery Power Bank for iPhone 6 Plus 5S 5C 5 4S, iPad Air 2 Mini 3, Samsung Galaxy S6 S5 S4 Note, Nexus, more Phones and Tablets (Gold) Li-Polymer Cells inside, it's Safer Exclusive Technology: Detects your device to deliver its fastest possible charge speed up to 2.4 amp High Capacity: The Galaxy S5 one and a half times, the iPhone 6 two times and other smartphones multiple times Ultra Compact: Aluminum design. Recharges in 4 hours with a 2 amp adapter (not included) and the included Micro USB cable Thinnest Power Bank. fits in a pocket