There is: https://shop.boox.com/products/mira
You could also use any eink tablet that runs Android with a screen mirroring app.
You could also use any eink tablet that runs Android with a screen mirroring app.
The $1800 version is exactly what I'd love to have as an extra monitor on my main computer, if not for the price tag. 3200x1800. 25.3". It looks really good. Unfortunately, as is, it's a little outside of my wallet range.
There's a smaller $800 version too. 1650x2200. 13.3". That looks more usable.
To me, a major upside of the OkMonitor is the wireless connectivity. That's very, very nice. Especially if the computer dongle could be made small enough for use with my laptop while traveling, it would be a very nice solution.