K-TOR Power Box 20 Watt Pedal Generator, Emergency Charger, Any Portable Devices Charger, Can Charge a 12 Volt Battery, Lightweight, Strong Polycarbonate Plastic Pedal Generator with 120 Volt 20 Watt output Folds to small size, easily protable and to set up easy to pedal for long periods of time, uses standard bike pedals Can be screwed down for stable operation Charge all portable electronics directly, laptops thru external battery and other appliance through 12 volt battery