1) 3D and alterable pitch system.
2) One-way bearing system. Flameout landing system.
3) tail rotor driven by belt transmission system.
4) 7-channel multifunctional R/C transmitter.
5) transmitter with 3D model switch, PIT and PLT modulation.
6) transmitter with modular lock switch to lock the adjusted
parameters of PIT and PLT.
7) Gyro outside