The Wongkong-M Waypoint Ground Station is the upgraded version of the Wongkong-M Single Waypoint Ground Station. It improves the function of way point editing for the ground control station. The line of DJI waypoint products provides waypoint mode, F channel controller, general purpose servo action, and 6 route templates. The maximum way points that could be added are twenty. It also supports the changing and editing of the flight route before or during the fight.

Product Link:
http://www.dji-innovations.com/products/wkm-waypoint/features/