Comment by caconym_

The Pomera line of devices from the Japanese company "King Jim" (yeah, I don't know) are really nice from a features point of view: limited enough to stay out of your way when you're writing, functional enough to enable the basic workflows you'd expect e.g. basic file management, SD card/USB transfers (something that many/most/all Western boutique writing devices like the Freewrite somehow didn't support well or at all last time I checked). Somewhere I have a funky e-ink Pomera thing with a folding keyboard that I did a lot of writing on, and later I bought a DM250, which is not e-ink but works pretty much the same, and now has a US version. I recommend it.