RadioLink F121 RTF Racing Drone Advanced Version Offers three flight modes worry-free practice Equipped with a 25 mW image transmission system Propeller protection, safer to training Flight with FPV experience a different world Entertaining and educational always well engaged USB LiPo battery charger easy energy supply The RadioLink F121 RTF Racing Drone Advanced Version altitude holding by inertial navigation and PID autotuned makes it easy from zero to hero. The size is small and easy to carry makes pilots fully enjoyed even with small space indoor. Overcoming the defects of Euler angles singular value and using rotation vector algorithms, the flight controller CS360 makes F121 possible to rise and descend at high speed even with Altitude Hold Mode. The F121 racing drone can be thrown and starts to fly at any angle. A fixed head without a compass means the head always remains in the same direction if the rudder stick is not moved. Otherwise, it will change according to the rudder stick. Move with a simultaneous response, F121 makes every beginner flight like a master.
