This solar stove has the unique ability to prepare meals all day long and all year-round. First of its kind The GoSun will passively work its magic whenever the sun is shining. Water can be heated and hot meals can be prepared with a little patience even on the coldest winter day. This fast, fuel-free portable solar cooker features a parabolic, tubular design that works effectively in retaining 80-90% of all the solar energy that is caught in its footprint. Cook a meal in less than 20 minutes, using no fuel – only the sun in this amazing solar oven that can take the place of a conventional barbecue. Temperature can be adjusted from 200-F (93-C) to a maximum cooking temp of 550-F (288-C). Manufacturer ensures your satisfaction with a Two-Year No-Questions-Asked-Warranty.