For those who want to make use of green energy on a small scale - the Explorer 5 USB by Brunton! The compact solar panel made from polycrystalline cells is foldable, fits in every bag and thus is always with you en route. The panel, with 5 Watt and 1000 Ma capacity, generates enough energy to charge a smartphone and other small electronic devices within around 3.5 hrs. A simple integrated USB output is used for this. With the practical Brunton Explorer 5 USB you can be both independent and environmentally friendly en route!