16.5 Inches 4 Channel Airwolf Radio Control Helicopter RTF 4 Channel R/C Set included, complete Left/Right, Up/Down, forward/backward Control (Rudder, Elevator, Throttle, Aileron) Full Parts Support available: spare rotors and battery Powered by Li-ion re-chargeable battery (adaptor included) Full Parts Support available: spare rotors and battery Powered by Li-ion re-chargeable battery (adaptor included)