The new headless compass mode makes flying the Skylark much easier. Without this feature, a quadcopter will be controlled like a helicopter whereby to go in a certain direction the helicopter must be rotated to face that direction and then you go forward. With the compass turned on it no longer matters which way the quadcopter is pointing, when you push forward on the transmitter the quadcopter will always move away from the take off position, and the same with the other directions regardless of which way it is pointing. The quadcopter is a pleasure to fly with the built in 6 axis gyro system ensuring stable flight even outdoors. The bright LED lights look great in the dark and allow night flight as they indicate direction of flight and light the flight path. Included with the V636 is a 2.4GHz LCD transmitter that allows multiple models to be used in the same area without interference. Please note the colour will be chosen at random.