Double Horse 9116 15" 2.4GHz 4CH 4 Channel RC Single Blade Helicopter Gyro Big 450 Size Products Function: Up and down, turn left and turn right, forward and backward, Left flying and right flying ,Gyro function with light Flight distance: About 100 meters Helis battery: 7.4/650mAh Li-po battery ( Included) Controler battery: 6*AA Batteries (Excluded) Gyro stabilization system