You get a few thousand erases with the built in battery, which is in theory not replaceable but I haven’t pulled it apart to check. Otherwise, the screen behaves like an e-ink screen and the screen is more or less permanently visible. I’m not sure if it’d last with the same image for, like, years, but hopefully that’s…
You get a few thousand erases with the built in battery, which is in theory not replaceable but I haven’t pulled it…