i did look into that before selling my Sony readers, but at that time the kit had some 1 star reviews on amazon - dunno how it rates nowadys.
I just read elsewhere on MR a reference to e-ink screens only having a 5 year life expectancy & the 650 must be approaching 5 years old ?
I dunno it that 5 years is based on some hypothetical usage or just on simple aging. I'd guess a screen is good for x thousand refreashes, like a flash drive
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