EPCTEK&reg;Blue 5200mAhUniversal Backup USB Battery Power Bank External Battery Pack Charger Droid, Google Glass, Nexus 4, Nexus 7, Nexus 10 100% Brand New Input: DC 5V, 1.0A Output:DC 5.0V,1.0A Capacity:3.7V/2600mAh Compatible Brand: For Apple,Samsung, LG ,HTC etc.