2.1 Amp (10 Watt) Rapid Charge USB Port Built-in Battery Capacity 2200mAh Built-in Battery Charges through DC Plug or Micro USB Cable Integrated Protection System: Over Current, Over Voltage, Over Temperature, Over Power, and Short Circuit Product Type: Power bank Weight: 5.36 oz Output Connector Type: On cable: Micro-USB Battery: 2200 mAh Product Type: Power bank Weight: 5.36 oz Power Provided: 10 Watt Detachable Cable Connector Type: Micro-USB Type B Max Electric Current: 2.4 A Capacity: 2200 mAh Cables Included: Micro-USB cable