until I noticed that the green light memory of my camera at every movement flashed briefly ... I have tested if it's because I had my battery only under control. But that has not changed the behavior. The error always occurs, regardless of whether the camera was on or off. Therefore, I had to send it.
After looking around on the internet I found out that I'm not the only one who had this problem. Some even report of the worked the wheels incorrectly and had to be turned in the wrong direction. That was not the case with me.
All in all, the device seems to be very good if it does not have one of these errors. Unfortunately, an exchange was not possible, otherwise I would be able to report whether the replacement unit would have been error-free.
Therefore there 4 stars from me!