Ok I had only a few minutes to test it (I am still at work). Don't know how to attach pictures without having to upload it somewhere else.
- The device reacts very fast to pen touches
- Samsung MicroSDXC 128GB EVO Plus UHS-I Grade 1 Class 10 with FAT32 format works
- The screen looks very nice, especially with enabled dithering
- It's really fun to work with huge PDFs
Update: I have attached a first picture. I have used a DIN A4 advanced math script.
Additionally I have zoomed in a little bit so that I don't have the white spaces on the left and right side.
There is a one Euro coin for a size comparison.