Propel RC Atom 1 Helicopter with Gyro Stabilization and Bluetooth Control Built-in gyroscopic chip provides for extreme flight stability and control. Flashing LED lights turn on and off from the remote. Three-channel operation gives you the ability to fly up, down, left, right, forward and backward. Helicopter easily charges right from the remote with its built-in lithium-polymer battery. Sync feature allows you and your friends to fly up to three helicopters in the same room without interference.