USTOP&trade;Purple Square cylinder Lipstick 2600mAh External Battery Backup Charger for iPhone 5,4S, 4, iPad 4, 3, 2, Mini, iPods, Samsung Galaxy S4, S3, S2,Thunderbolt, Incredible, Droid DNA, Motorola DROID MAXX Moto X, Droid, Google Glass, Nexus 4, Nexus 7, Nexus 10 Capacity: 2600mAh Cell: 3.7V/18650 Input: 5V/800mA; Output: 5V/800mA Charging time: about 5 hours Cycle life: at least 500 times