This HTB E99 Pro drone has a four-rotor fuselage made of high-strength and engineering-resistant ABS materials. With a 4-axis structure . the drone is even more flexible . speedy . and can fly indoors. It has a built-in 6-axis gyro stabilizer to ensure accurate positioning in flight. Three speed (low-speed/medium-speed/high-speed) is adjustable. Two cameras provide a wide range of 4K high-definition pictures and videos. You can also use wifi to connect with your mobile phone to control the drone . take pictures/videos . and transmit images in real time. Headless function makes the drone easy to directional control. With 2 Modular 3.7V 1800mAh Batteries . the drone can support up to 30 minutes flight time . which means Less charging but More flying! This mini drone also brings you many other features . such as altitude hold . 360?? stunt flip . auto take-off/landing and one-key return. With foldable arms . it has a small size . and is easy to carry. The structure uses a modular design which makes it easy to install and repair. This drone is perfect for adults . kids . as well as beginners (Assistance from an experienced adult is recommended).