The 4ch version is different from others. Our Cessna is equipped with 4 servos not 3 servos as common with other models. Includes everything the beginner needs. Servos and steering levers are mounted and the airplane could be ready for flight within 20 minutes. We use EPS techniques for the airframe in order to achieve both smooth surface and best dynamic material properties. The model uses two servos mounted in the fuselage for the tail wing and roll rudders and has 2 servos mounted in the main wing for more responsive aileron control