Altitude Hold：The Drone is Built-in with an AIR PRESSURE SENSOR.The RC Drone Will Automatically Set the Height. It makes the drone easy to be controlled. One-Button 360° Flip and One-Button Take off/Landing：By using one button, you can perform takeoff, landing and 360 degree flipping. One-Button Speeds Switch(High/Medium/low)：Low speed for beginner, high for skilled aviator. Make your flight easier.