With the VIPER Radio Control Airplane with a patent-pending M.A.S.C. Controller, the user can tilt his wrist to the right or left and the plane follows the hand and turns the appropriate direction. M.A.S.C. puts the user in the pilot's seat. The throttle is controlled by squeezing the variable speed trigger for more altitude. The powerful twin motors and aerodynamic design add to the fun of M.A.S.C. as VIPER climbs and dives across the sky. The Estes VIPER is easy and intuitive for a beginner pilot to learn to fly and also delivers better maneuvers and is more fun for an advanced pilot. It requires six AA alkaline batteries (not included). Launch date: June 2008.