I've purchased one. (MP-HD785-FZ) almost identical.
The camera is great physically and quality wise but severely lacking in the software department.
Autotracking is one thing I cannot get to work. There isn't any list of what the presets do and if they are standard for the industry I'd like to know what they are. There is no list of them in the manual.
The manual has a description of all menu and sub menu items but there actual function is questionable. I cannot get the OSD to work from a browser and it is in Chinese. From their supplied software the OSD is in English but it suffers from poor software in my opinion and it is practically useless.
I'd buy more of these but for the poor firmware in it.