BLADE Nano QX 3D RTF Vehicle Fully-assembled, no building necessary SAFE&reg; technology makes it easy to enjoy RC flight and aerobatics Flip 180&#8211;360&deg; in any direction at the press of a button. Fly inverted without having to learn complex control input Colorful LEDs and high-contrast body help maintain orientation Please contact Horizon Hobby at 800.959.2305 for technical support.