The Turbo Runner is a master of all tricks. Transitioning from flight to running mode, it darts across walls then dashes across ceilings – it even runs down staircases. It has a 'FLIP' mode and an 'AUTOPILOT' mode which puts the craft in a circling pattern where all you have to control is the altitude. With the option for faster speed, you can really get serious about flying as this will challenge even the best of pilots. Quadcopter measures 3.5" (spherical). uses 4 AA batteries not included