Dragonfly 4 Radio Control Helicopter is the up-to-date high-tech product from Walkera, the manufacturer of Dragonfly series RC helicopters. The 2007 model is the latest version of No. 4 RC Heli. It can simulate most flying operations of modern helicopters, such as hanging in the air, rolling, yawing, moving forward and backward. It offers unimaginable flying performance and flying time. It 's built with ultra strong carbon fiber materials which are very crash resistant. It is the most popular and most affordable RC heli on the market.