Altitude Hold Function: after using the left joystick (Accelerator) to control the ascending / descending flight of the aircraft. free up the left joystick (Accelerator) and the aircraft will still hover at that height at which the joystick is freed HD Camera to take photos and videos while flying! Bring a new perspective to your photos and videos from the air. Wifi FPV Real-time Transmission allows you to view photos & video while flying It supports any IOS and Android phones. The cell phone holder keeps your phone secure all the time Headless / IOC Function: Usually, the forward direction of a flying multi-rotor is the same as the nose direction. By using Headless/IOC, the forward direction has nothing to do with nose direction. This lessens the steepness of the learning curve and allows the pilot to enjoy flight while slowly learning each specific orientation of the quadcopter. One key 360° roll, continuous roll for perfect action and wonderful performance