Your hoverboard is factory calibrated. Follow the following calibration steps if your WISPEED hoverboard does not react correctly or is difficult to control.
1. Turn off your hoverboard. And keep it horizontal on a level surface, not on a slope. It is really necessary that the 2 joints are symmetrical and that they follow each other.
2. Press and hold the On/Off button for about 7 seconds until the horn beeps continuously. Be careful to keep your hoverboard parallel, in order to obtain a perfect inclination. The hoverboard takes the position according to the inclination in which it was switched off.