> I dont remember any eInk display that took 30 seconds for a refresh This was specifically some of the early multicolor displays which had exceptionally long

> I dont remember any eInk display that took 30 seconds for a refresh This was specifically some of the early multicolor displays which had exceptionally long refreshes. There's a demonstration of a similar display going through a couple of updates here: https://www.youtube.com/watch?v=CJ12-eW7--M https://www.youtube.com/watch?v=CJ12-eW7--M