Double Horse DH9116 Infrared Gyro 1st Single Blade 15" Large RC Helicopter 4 CHANNEL 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 MOPS (Motor Overload Protection System) High strength metal frame sides Helis Size:385mm x 75 mm x 140mm Box Size:760mm x 110mm x 240mm