REMAX 6000 mAh Power Band with Dual USB Fast Charge External Battery charge 6000mAh polymer battery.Provide with dual 2.1A quick-charge output delivers reliable power for your device. 2 USB ports.Help ensure a simple connection to your devices.Including iPhone,Samsung,Nokia,iPad. Fast charging,only take 1.5 hour to fully charge iPhone. Compatible mose USB enabled devices. Intelligent Recognition & Energy Save Plug-and-Charge,Auto Stop Output After Full Charger