WOOKONG-H
DJI' first stabilization system built for scale/hobby helicopter enthusiasts, which works on all kinds of scale/hobby helicopters: aircraft with Bi-blade or Tri-blade, with or without flybar, with all kinds of swash-plates and rotor heads, electronic or gasoline or turbine helicopter engines. All types of scale or hobby helicopters can be installed with WOOKONG quickly and easily.

Atti. Mode is suitable for no GPS signal or weak GPS signal environment. WooKong-H can control attitude stabilization and lock flight altitude accurate; Stick center position for 0˚ attitude, its endpoint for 45˚which is a fixed limit. Atti. Mode also can be used in promptly and big flight movement.

Product Link:
http://www.dji-innovations.com/products/wookong-h/features/