The UDI U818A HD has the 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. 6 AXIS GYRO - Equipped with the latest 6-axis flight control systems, 3D lock, More scheduled flight, operating more to the force! 360° Eversion - One key 360°roll,continuous roll for perfect action and wonderful performance

GLOBAL POSITIONING SYSTEM (GPS): F18 completely aware of its location and relation to you, it hovers precisely, moves accurately and locks onto satellites fast. Return-to-Home (RTH) are designed to protect your F18, it automatically returns to home point when battery is low or the control signal is out of range. So your F18 is always under control! BRUSHLESS MOTORS: Built in four super powerfull brushless motors have the power and precision speed up, quickly increase or decrease altitude and stop immediately, they are 50% more power than the non-brushless motors while with less power consumption that made it long flying time up to 20 minutes. Also they work with lightning-fast ESCs to make your F18 fast, agile and responsive. 1080P HD LIVE VIEW FPV CAMERA: The onboard FPV FHD camera lets you see what your aircraft see after the camera is linked to the APP Contixo F18, the 5.0GHz band Wi-Fi zero-latency real time images transmission reach up 500 m (1640 ft.) FPV distance. (Phone WIFI band must be 5.0Ghz compatible, most of the new phones have)