This is the remote controlled helicopter that is controlled by a smartphone. A free downloaded app turns an iPhone, iPad, or Droid into a touch-screen remote control that communicates with the helicopter using your phone's built-in wireless radio, allowing for indoor or outdoor use up to 60' away. The app uses the motion-sensing accelerometers built into smart devices to allow the simple tilt and pan of a phone or tablet to precisely control the helicopter's forward/backward, left/right, and up/down movements, accompanied by a direction and speed indicator; a swipe of a finger controls the throttle. Its horizontal tail rotor works with its two contra-rotating coaxial main rotors to keep the helicopter balanced during flight. Its rechargeable battery provides five-minute flight times from a 60-minute charge using the included USB charging cable. Ages 14 and up. 12" L x 2" W x 4 1/2" H. (5 1/4 oz.)