... Lamp 1, Pro-environment: this product powered by solar energy, no pollution produced, it is a green ... product.2, Low cost: since the solar energy is inexhaustible, low cost for power.3, ... an ideal lighting product for living, traveling, camping and outdoor using.Charging:1, It could be charged when ... before using.2, The solar panel should face to the natural light when charging.3, Make sure the ...