Hubsan X4 FPV real time brushless 5.8GHz transmitter and 2.4GHz receiver . The quadcopter equipped with 1080P HD camera with 4.3 inch LCD screen (resolution 480*272?. H501s function : GPS ,headless mode ,automatic return ,altitude mode ,follow me function . 6 Axis Gyro latest 6 axis fly control system ,and altitude mode make it fly more smoothly . Lightweight airframe with nice durability and fashion design .