XTEINK X4 E-Book Reader (Developer Edition), 4.3″ Pocket E-Ink eReader, Physical Page-Turn Buttons, Ultra-Thin 0.23″ & 2.72 oz, Magnetic-Ready Design, Distraction-Free Reading, 16GB, Mist Gray

Price: $69.00
(as of Jun 16, 2026 23:04:26 UTC – Details)

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Product description 1 Pocket-Sized Freedom 2 Magnetic-Ready Design 3 Paper-Like Comfort

Can I use online reading or install other reading apps?

No. X4 features a closed operating system designed for a distraction-free reading experience. You can easily transfer eBooks via WiFi, SD card, or the official app.

What file formats are supported by the reader for books/comics, images, and fonts?

The reader supports the following formats:

Books/Comics:xtc, xtch, xtcz, txt, epub

Images:xtg, xth, jpg, png, bmp

Fonts:bin

Note:mobi and pdf files can be automatically converted into supported formats when transferred via the app.

How long does the battery last?

Battery life can last for weeks on a single charge with light use. Heavy use may last around 2 days, while casual reading can last up to about a week.

Does it have a front light?

No. X4 is designed without a front light to maintain an ultra-thin body and deliver a clearer, paper-like display. For the best experience, we recommend using it in a well-lit environment or with an external reading light.

How can I transfer eBooks?

Supports multiple transfer methods, including SD card (16GB card and reader included), WiFi transfer (via mobile or computer), and the official app.

All overseas models purchased through official channels – both past sold and current for sale– have not and do not restrict users from installing third-party firmware. Also, there is no plan to restrict the use of third-party firmware on overseas models purchased from official channels.
Pocket-Size Mini eReader for Reading Anywhere: Ultra-light at just 0.23 inch and only 2.72 oz, Xteink X4 is designed for true portability. Slip it into your pocket or bag and enjoy reading anytime. Perfect for commuting, travel, or quick reading breaks throughout the day.
4.3″ Paper-Like E-Ink Display: The 4.3-inch E-Ink screen delivers a natural paper-like reading experience that’s gentle on the eyes. Enjoy clear text and comfortable reading without glare or distractions.
Magnetic-Ready Design for Flexible Use:Includes magnetic stick-on rings for easy attachment to your phone or othersurfaces. For proper adhesion and secure placement, refer to the Installation Manual in the Safety Instructions.
Pure Reading, No Distractions: Enjoy a dedicated reading experience with 16GB storage for thousands of books. Physical page-turn buttons make reading effortless. No subscriptions, no notifications, just focused reading.
Long-Lasting 14-Day Battery Life: Powered by a 650 mAh battery, Xteink X4 can last up to 14 days on a single charge based on typical reading (1–3 hours per day), so you can stay immersed in your books without frequent charging.
Enhanced Durability with Premium Glass Etching: Built with high-aluminosilicate glass for improved strength and clarity, while maintaining a refined viewing experience. Handle with care to protect the inner screen (avoid impact or pressure on the screen).

Product summary

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