The Omega aluminum cased rechargeable mobile Power Bank's lithium ion battery offers 2200mAh of backup power for your mobile phone. Plug your device's charging cable into the USB port to charge. Includes a USB/Micro USB cable to charge the Power Bank. Input: 5V / 500 mA, output: 5V / 1000 mA. This product has undergone the most rigorous testing in the industry. UL® Certified, and BC (California Energy Commission), and FCC VOC certified. UL® Certified, BC & FCC VOC Certified and UL Files (MH61064 I.T.E)