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LEOSO WLtoys XK K127 RC Helicopter Remote Control Helicopter, Altitude Hold, One Key Take Off/Landing, RC Airplane for Kids Boys Mens and Beginners
LEOSO
GoolRC C186 Remote Control Helicopter Remote Control Drone Single Propeller Without Ailerons 6-axis Gyro Stabilization Remote Control Airplane Altitude Hold Girls Adults
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AIAA (American Institute of Aeronautics & Astronautics)