Cheerson CX-OF Wifi FPV Optical Flow Dance Mode Mini Slefie RC Quadcopter BNF/RTF Cheerson CX-OF FPV Drone Features Ascend/descend, forward/backward, turn left/right, left/right rotation, etc. It is equipped with optical flow that it can collect images by collector and calculate the shifting by optical flow method. The effective sensing height is 3-5m. It can sense […]