If you read comics, magazines, or color PDFs on an e-reader, you know the trade: the color is gentle to the point of washed-out, and the screen can look a little grey. E Ink — the company behind the screen in nearly every e-reader — announced Kaleido 4 on October 15, the newest generation of its color e-paper, and it goes straight at both complaints. The catch is in the second half of the headline: before the better color can help you, you have to check which device actually has it.
It's a new screen, not a software update — your current e-reader can't download it.
What actually improved
- Double the color. E Ink says Kaleido 4 doubles the color gamut volume of Kaleido 3 — the range of colors the screen can show — so illustrations, covers, and charts should look richer and less muted.
- Brighter whites, stronger contrast. White reflectance is up 15% and contrast up 50%, which is the part your eyes notice most: text sits on a whiter page instead of a grey one.
- Video at up to 18 frames per second. A new oxide backplane behind the display lets it refresh far faster than color e-paper used to — page turns and note-taking feel snappier, and short clips are genuinely watchable.
The check: which device has it?
Right now, exactly one: Hanvon Technology's M10C II, a note-taking tablet with a battery-free pen and glare-reducing etched glass — and it's available in China only, with no price announced yet. No Kindle or Kobo with Kaleido 4 has been announced. The color e-readers on shelves today — Kindle Colorsoft, Kobo's colour models, Boox and PocketBook devices — run Kaleido 3 or a custom version of it, and a panel generation can't be added later by an update.
Shopping for a color e-reader now? Do these three checks
- Read the panel line in the specs. If a listing just says "color E Ink," find the generation — Kaleido 3 is today's standard; Kaleido 4 is the incoming one. That one line tells you which screen era you're buying into.
- Match the screen to what you actually read. Mostly novels? A black-and-white reader is cheaper and sharper for text. Comics, textbooks, magazines, and marked-up PDFs are where Kaleido 4's extra color and contrast will earn their keep.
- Decide if you can wait. If you need a reader today, a Kaleido 3 device is a perfectly good buy — nothing about it stops working. If your purchase can wait and color quality is the whole point, Kaleido 4 devices from the familiar brands are the ones to watch for next.
Who this helps
- Comic and magazine readers — the readers most let down by washed-out color today.
- Students and note-takers — color diagrams, highlights, and PDFs that stay easy on the eyes for long sessions.
- Anyone about to buy a color e-reader — one specs check now can save you buying the outgoing screen generation by accident.
The upgrade is real — it's just arriving one device at a time. Check the panel before you check out.
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