U9901 Helicóptero RC de 6 canales con motor sin escobillas, mantenimiento de altitud, flujo óptico, despegue con un solo botón, giro 3D, modelo para aficionados adultos.

1, 6 channels have no auxiliary design, and the propeller is designed by citing aerodynamic principle to provide strong power and self-stability of the body, and the flight is super stable. 2, the total bearing remote control, the control feel is more refined, and the digital steering gear is more durable; 3. No direct driver, stronger power, sensitive response and good wind resistance. 4, barometer height, optical flow positioning, stable flight; 5, high-rate modular secondary battery, power indicator, convenient and fast installation, effective protection of the battery, longer service life. 6. Ascending, descending, advancing, retreating, flying to the left, flying to the right, rotating to the left, rotating to the right, and flying on the route; 7. One-button take-off, one-button landing, one-button inverted flight and other functions 8, 6G mode, using 6-axis gyroscope, stable flight, especially suitable for beginners to fly; 9. Low-voltage alarm, locked-rotor protection, out-of-control protection, large and small rudder conversion, 10, equipped with a dedicated USB charger, charging fast, safe and stable.