Helicopter with 2.4 GHz technology - Digital Proportional incl. 4-channel controller 1S LiPo exchangeable battery (3.7V - 300mAh) 4 AA batteries and 0.5A USB charging cable. With single blade steering for excellent flight characteristics Gyro system as well as altitude control assistant with auto take-off and landing. Length approx. 27 cm. Flight time up to 15 minutes. Charging time approx. 70 minutes. Top features: Altitude control Headless mode 3D flight mode.