... infra-red receiver (Gyro, ESC, Mixer, Receiver). This palm size Cobra Toy Helicopter (18.5cm long), you could never imagine that ... no undesired changes in yaw. Highlight features of the 331 Cobra 3 channels, Extra long distance Infra-red controlled, 3 bands ... Range: Up to 10m (30ft) ITEM INCLUDED: 1 x 331 Cobra 3CH RC Helicopter 1 x Transmitter