Review on Quadcopter 4DRC V4, black by Ada Bronowicka ᠌

In general, the purchase is satisfied. When flying, it is better to keep the drone with red light towards you, as it flies back 1.5-2 times faster than forward. If the wind is light, it is necessary to turn on the 2nd speed. With gusts of wind 3 speed. 1 speed and playing with the camera - only complete calm or room. Tricks can be done at a height of 2.5 meters, otherwise hitting the ground. Launch: a flat surface, turn on the drone, turn on the remote control, on the remote control, the left joystick is briefly pressed up, then down, this is binding to the remote control; then set the speed with the top button; then, under the right joystick, hold the lowest button for a long time until the signal, this is calibration; then we take off either manually with the left joystick up, or press the rightmost auto-takeoff button under the right joystick; landing either with the auto takeoff button or the left joystick down. Under the left joystick, the calibration buttons are absolutely useless, you can forget about them.