The operation is very simple, is very nice, the device offers another Fokusierlicht and can trigger the camera even remotely. The necessary cables are included. The only downer: The system is still blind to operate when the camera is higher than yours, because the display is not upright. On the other hand: Would it be on edge, is free to Murphy, also 100% wrong.
Technically, there is nothing to complain about and the price / performance ratio is good. I would buy the device again.