DJI Spreading Wings S900 Professional Hexacopter with DJI A2 Flight Controller and Any Z15 Gimbal This version bundles the S900 air frame with the A2 flight controller and your choice of Z15 Gimbals. Lightweight materials such as a sturdy carbon fiber frame make flights more enjoyable by lasting longer New and improved motors makes for a much more reliable flight. Spark proof plug will prevent short circuits when you plug in. Improved power distribution system insures no cables will come loose during flight. Better footage by a reduction in vibrations caused by strategically using dampers to separate the mainframe with the gimbal bracket. Removable upper centerboard allows easy access and faster installation of flight controller power distribution system and main controller. Retractable landing gear makes every great shot possible. New arm design renders the aircraft more stable while rolling and pitching.