... :10 square meters brightness: 100-120LM voltage double protection Parametres1, power of solar panel: 0.5 W2, battery : NI-MH 1.2V ... solar energy bag, when first one is on, 2nd gear means 50% of full brightness, and 3rd means 100% of full brightness5, tough type switch ... around10 square metersUssage1, open the package, press the symbol ( the switch), then it will bright, press again it will brighter. If ...