Main trade-off
PocketBook Era Color PB700K3
235 g before a cover. File-format support does not remove DRM, and synthetic speech is not a professionally narrated audiobook.
Head-to-head
Choose Era Color when supported audiobook files you already own are part of the job. Era Color plays supported local audiobook files, while Libra’s Bluetooth audio route is for Kobo audiobooks. Choose Libra for its lighter body and optional Stylus 2 PDF workflow. That pen is separate, and EPUB handwriting cannot be exported.
Before you choose
If you have bought downloadable, unprotected audiobooks and want to listen while preparing dinner, Era Color has a documented local-file route and a built-in speaker. Libra’s Bluetooth feature is for Kobo audiobooks. It does not establish support for copying your existing M4B collection onto the device. This can reverse a choice made on screen size alone. Check one real file, its DRM status and where you plan to listen. Era’s speaker may suit an empty kitchen, while headphones are more considerate in a shared room. Neither file-format list promises that a protected purchase from another store will open.
What this is based on
An already-owned audiobook collection, hands-busy household work and shared-space etiquette crossed with actual file and audio-output support. No general DRM compatibility or speaker-quality claim.
Main trade-off
235 g before a cover. File-format support does not remove DRM, and synthetic speech is not a professionally narrated audiobook.
Main trade-off
Local audiobook files are not the documented Kobo audio route. Stylus 2 costs extra and EPUB handwriting stays on the reader.

Compare Era Color and Libra Colour for owned audiobooks, shared rooms, carrying weight and handwritten PDF notes. Check which library and output you need.
Both are seven-inch color readers with page-turn buttons, warm-light control and IPX8. Buyers looking beyond Kindle plausibly compare these close physical alternatives. Local audio and optional PDF handwriting are different ways of extending a reader beyond novels.
Winner by situation
Era lists the local format. Kobo documents Kobo audiobooks, without establishing this local-file route.
Libra has that documented workflow with a separate Stylus 2 and an eligible file.
Libra is 35.5 g lighter before accessories.
Kobo offers integrated borrowing where the country, library and edition qualify. PocketBook’s Adobe DRM support alone does not establish an equally direct loan journey.
What matters in practice
If you have bought downloadable, unprotected audiobooks and want to listen while preparing dinner, Era Color has a documented local-file route and a built-in speaker. Libra’s Bluetooth feature is for Kobo audiobooks. It does not establish support for copying your existing M4B collection onto the device. This can reverse a choice made on screen size alone. Check one real file, its DRM status and where you plan to listen. Era’s speaker may suit an empty kitchen, while headphones are more considerate in a shared room. Neither file-format list promises that a protected purchase from another store will open.
An already-owned audiobook collection, hands-busy household work and shared-space etiquette crossed with actual file and audio-output support. No general DRM compatibility or speaker-quality claim.
Libra weighs 35.5 g less than Era Color before accessories. More importantly for someone who travels with a document to review, its optional pen can put handwritten changes into an eligible PDF that goes back to the author over USB. That combines a smaller carrying load with a documented output, rather than merely adding a note-taking label. The pen and its charging need belong in the purchase. The advantage disappears if the file forbids annotations or if the intended work is handwritten EPUB notes, which cannot be exported. Era remains the better choice when owned audio is the actual reason to buy and PDF handwriting is only a vague possibility.
Daily travel and a shared PDF correction task crossed with 235 minus 199.5 g and file-specific markup/export. No unverified pen absence claim is needed to establish Libra’s positive capability.
For someone who mainly reads library loans, Kobo’s integrated borrowing can be more useful than a long list of file extensions. It still depends on a supported country, participating library and matching edition, with a computer fallback when the edition does not match. Era lists Adobe DRM support, but that alone does not prove your specific library can lend directly to it without setup. Test the actual loan journey before choosing around format breadth. Era’s local-audio advantage remains valuable for owned files, while a working Kobo library route may matter more for a borrower who rarely buys books.
Library dependence and limited setup tolerance crossed with positive integrated lending evidence, edition matching and narrower file-format evidence.

PocketBook, PB700K3-1-WW
Play supported unprotected MP3 or M4B audiobooks through the speaker or suitable headphones.
Kobo, N428-TP-WH-S-CK
Carry 35.5 g less before a cover while keeping a seven-inch color page and physical buttons.
Meaningful differences
| What changes | PocketBook Era Color PB700K3 | Kobo Libra Colour N428 | Why it matters |
|---|---|---|---|
| Owned audio library | MP3, M4B and other listed audiobook formats, with speaker and Bluetooth. | Bluetooth playback for Kobo audiobooks. | The Bluetooth logo does not mean both can play the same files you own. |
| After headphones come off | Built-in mono speaker and text-to-speech. | Kobo audiobook Bluetooth route. | Era can keep supported audio on the reader without a separate speaker. Check whether room audio is welcome. |
| Handwritten PDFs | No cited Stylus 2-style PDF pen workflow. | Optional Stylus 2 and eligible PDF markup export. | Choose Libra for that documented job. Do not infer equivalent pen support from a touchscreen. |
| Device weight | 235 g. | 199.5 g. | Libra is 35.5 g lighter before the case. Grip and accessory choice still matter. |
What you give up
Recommendation switch
Choose PocketBook Era Color PB700K3. Era’s local playback and output options solve that need.
Choose Kobo Libra Colour N428. Libra combines the documented pen workflow with lower device weight.
What matters in practice
You want one reader for books and audio you already own, but also like the idea of writing corrections on a document.
What the facts say
Useful conclusions from the current e-readers comparison, followed by the checked facts used to reach them.
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| PocketBook Era Color PB700K3 |
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| Kobo Libra Colour N428 |
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Ready to choose?
Open either model on Amazon to check the current price, customer reviews and delivery options.

Play supported unprotected MP3 or M4B audiobooks through the speaker or suitable headphones.
Use text-to-speech with supported text when synthetic narration suits the task.
See price & reviews on AmazonCarry 35.5 g less before a cover while keeping a seven-inch color page and physical buttons.
Add a separate Stylus 2 for permitted PDF markup that can be returned by USB.
See price & reviews on AmazonLinks open in a new tab.