Unique pedal power station to generate power at your seat. They estimate that you could produce ""The Power Box can produce up to 20 watts. It can directly charge a full range of portable devices. Because it is so powerful, it can charge more than one device at a time — like a smart phone and a tablet. Since it can be cranked for long periods of time comfortably, it can be used for higher power applications that it cannot charge directly. Simply charge an external battery and run your appliances, either directly from the external battery or through an inverter."