Syma X4 4 Channel 2.4GHz RC Pioneer Quad Copter w/ Gyro A key 360o roll, continuous roll for perfect action and wonderful performance. The newest 3 axis gyro flying system with the more sensitive of gyro's regulating, more stable and flexible flight. Using spread spectrum technology for further remote distance, best anti-interference ability, least power consumption. you could fly more helicopters at the same time, its reaction speed is 100 times faster than other radio control Modular design structure is applied, more simple for assembly and convenient for maintenance Function: Various control options for those piloting the X4 Up, Down, Left, Right, Forward, Backward, Leftward flight, Rightward flight.