Product Description SST-6201 Double solar panel charger Product features: 1. Simple but elegant design. 2. Integrate amorphous silicon solar cell and crystalline solar cell on both side of the charger, so that you can use either indoor or outdoor. It means you can almost keep charging for all day long. 3. It has two kind of voltage output: 5.8V/7.8V, it can charge over 90% of the mobile phones and electronics products in the current market. 4. With LED flashlight, can serve as a Mini torch. 5. With separate USB output. 6. You also can use normal electricity to charge the built-in battery in the rainy day or at night. 7. It is an environmentally friendly product, no running cost.