BoxWave Rejuva Power Pack - Compact, Portable, 2,600 mAh Rechargeable Li-ion Smartphone Battery Charger Powerbank, External Battery Pack; Compatible with Android & Apple Devices, Smart Phones, iPhone 5s / 5, iPhone 4s / 4, Samsung Galaxy S4, S3, Note 3, Note 2, Google Nexus 5, LG Nexus 4, HTC One, Most Other Mobile Devices (Pink) 2600 mAh of total charging capacity Fully recharge most standard smartphones with a single charge Ultra-portable - take it with you anywhere you go Charger operates with an output of 1 Amp at 5 Volts Available colors: Green, Blue, Orange, Yellow and Pink