Specifications
Charging voltage: 5V.   
Charging Current: 500 mA(Max)
Output Voltage of the charger :5V and 5.6 V, the charger is able to detect it automatically
Output Current of the charger: 500 mA( MAX)
Capacity: 4200 mAh

Operation step
1. Connect the output of power line with charger, and connect the another
    end of power line plug into “OUT” interface .It shows normal charging
    status as the light flashes green.
2. After recharging or fail to connect with the charger, the light will stops
    winking.
3. 30%, 70%, 100% three lights will respectively show the different charging
    amount of electricity.
4. As the light flashes blue, which shows the electric quantity of charger is
    low and  should charge charger in time.
5. The “IN” port is to charge this charger; the light will flash red amid
    charging. After charging, the red light will stop winking.
6. This charger is able to charge all kinds of mobile phone.