... meters brightness: 100-120LM voltage double protection Parametres1, power of solar panel: 0.5 W2, battery : NI-MH 1 ... 8 hours;4, there are three gears for this 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, ... For collecting, just fold the according to the size of the panel, then put it into the package bag ...