The helicopter belongs to the micro type, only 43 g. Stable flight, flexible operation, simple structure, easy to maintain. Its unique impact resistance properties, so that you can train your 3 d technology at the lowest cost. Three independent digital servo system, fast response and accurate, and triaxial aileron control system, automatic calibration flight attitude, give you a better feeling of control. If you are interested in, please go to<a href="http://www.rctophobby.com/">online rctophobby</a> more information.