The video lasts about 30 minutes and has some great info about the different Challenger kits available. You will see several different types of Challengers plus some amazing performance and flying. The versatility of the Challenger and  extreme capabilities will have you on the edge of your seat drooling. There is also important factory and building information. If you are considering buying an ultralight, I highly suggest this  video.  If your not already hooked, you will be when you see the video.