You can supply power to your development boards that operates with 5V or recharge your smart phones at anywhere with this product, which you can feel the GP quality. It has the power of 12000 mAh and it has 2 outputs; one can give 2100 mA output, the other can give 2400 mA output. This product is white colored.
You can see the battery level through the 4 led display.
You can recharge it via the Micro USB input. Input current could be 1000 mA max.