... Weight: 3.5lbs Dimensions: 51x25x18cm Volume: 30l SOLAR BACKPACK BAG,Fabric: 600D shell made from recycled ... inches (30 liters)Backpack Electronics:4 Watts of Solar Power: From three tough, light weight, ... iPods, small cameras and most other handheld electronics Solar Backpack is built tough for use on a ... watts of solar power, a fast solar charger. To charge a laptop, see the . The solar panels protect ...