Nano Tornado Camera Drone: World's Safest Drone - Unlike other drones on the market, the Nano Tornado flyer is built around ducted fan technology. It doesn't have exposed spinning parts, which means there are no fast moving blades that could cut you or bystanders. It also means that bumps, scrapes against walls, tree trunks, etc. do not break the delicate blades holding the vehicle in the air. When storing the drone, there is nothing to assemble or disassemble. There is no risk of putting pieces on incorrectly and no time delay while preparing to fly.