Metal main frame and metal tail boom make the HM 22#E firm and simplified, and the servo set easy to be mounted. The main rotor driven by high powerful 370SD with strong anti-wind ability and high efficiency could make your model take off stably and make sure it can do such performances of hovering, reverse, 3D and so on well.High quality servo is prompt in reaction; it matches with the strong magnetic N30 tail motor and can fly various flight courses. and 4-in-1 receiver mixes together the circuits of receiver, speed controller, gyro and mixer. It is of compacted size, high sensitivity, and strong anti-interference.The main rotor blades with high efficiency are quite special and good-looking; 11.1V 800mAh Li-Po battery is so efficient that can make your model fly for 8-9 minutes every time. Besides,the 6-channal transmitter can adjust the parameters of PIT & PLT. According to the slight parameters adjustment can not only make the flight better, but also make feel that your flight skill are improving rapidly.