Xteink X4 Pro: The Specs, What It Does, and Who It's For

If you're reading this, you've probably already found the X4 Pro's product page, seen the $99 price, and hit the same wall a lot of people have this month: it's sold out, with a restock listed for August 6. That's not a bad sign. It's the opposite. The X4 Pro is the model that finally adds the front light Xteink readers had been asking for, and that addition in particular has won wide praise. So while you wait for stock to come back, it's worth knowing exactly what you're setting a reminder for: a fully loaded pocket e-reader with the one feature the older models were missing.

What the X4 Pro actually is

The X4 Pro is the top of the pocket e-reader line: a 4.3-inch E Ink reader that weighs just 72g, measures 5.95mm thin, and runs on an 1100mAh battery. It lists at $99 for the Space Black finish (as-of 2026-07-27). Where the X3 and X4 keep things simple, the Pro is the fully featured one that readers step up to.

It's a dedicated reading device built to do one thing well: hold your whole library in your pocket with nothing on the screen to pull you away from the page. The 1100mAh battery is the largest in the lineup, tucked into a body just 5.95mm thin. The hardware is built around long, comfortable reading sessions wherever you happen to be, and at 72g it stays light enough to hold one-handed for a whole chapter. It keeps the same pocket format as the rest of the line, with more built in: the X3 sits at 3.7 inches, while the X4 and X4 Pro both move up to a 4.3-inch screen.

The Pro is the only model with both the front light and the touchscreen, and that combination is exactly what the reviews keep coming back to. If you have been comparing pocket readers, its real draw is bringing features usually found on pricier devices down to a $99 reader.

The front light reviewers keep praising

The headline feature is the front light, and it's the one thing reviewers and early buyers agree on. It adjusts for both brightness and warmth, so the screen shifts from a crisp cool white in daylight to a soft amber at night. The X3 and X4 have no front light at all, which is exactly why the Pro feels like such a leap forward for the people using it.

In one Reddit thread rounding up the device's features, the front light was the point where, as a commenter put it, "everyone seems to agree on this one." On the front light specifically, reviewers agreed too.

"The front light was kind of everything we all ever wanted on one of these. I really do love it… it makes this, in my mind, a better device than the X4 or the X3."— YouTube reviewer Jacob Lamb

It also changes when and where you read. The brightness and the warmth adjust independently, so you can keep the screen cool and bright at your desk and switch to a dimmer, warmer page for reading in low light, without clipping a lamp to the cover.

"1 less excuse not to read at night now. My booklight era is officially over."— TikTok creator @dashyiiing

For a device this small, that built-in light matters, since a pocket reader is the kind you pull out in bed, on a plane, or on an evening commute where there often isn't a good lamp.

Three upgrades in one, and why it costs $99

The front light is the star, but the X4 Pro actually brings three upgrades together in one device: the adjustable front light, a touchscreen, and physical buttons. The X3 and X4 have the buttons but neither the light nor the touch. Getting all three at once, on the larger 4.3-inch screen, is what puts the Pro at $99 instead of $69.

The touchscreen makes the whole device quicker to use. Tapping through menus, searching a book, or typing into a search box is faster on glass, and it works right alongside the physical buttons rather than replacing them. You can tap the screen when you want to move quickly, or use the buttons to turn pages one-handed without covering the text you're reading.

Add the adjustable front light on top of that, and the value case gets easier to make.

"The front light is a great feature and might make the X4 Pro worth its $99 price."— Tyler Hayes, writing for Yahoo

You're paying $30 over the X3 to fold the light, the touch, and the bigger screen into one reader.

Load your own books, no lock-in

The X4 Pro keeps the same open approach to files, so your library stays yours. You can load EPUB and TXT books you already own — along with MOBI, PDF, and image formats — sideload them through the app, and read them without being tied to a single store. For anyone tired of ecosystem lock-in, that freedom is a real part of the appeal.

It's a big draw for readers who want to buy once and read anywhere they like. As one reader described the appeal of going DRM-free, you can "buy your books literally anywhere you want." The Pro sticks to exactly what you would expect out of the box: your own files, loaded by you and read on your terms.

Who the X4 Pro is perfect for

The X4 Pro is made for the reader who wants the whole package in one pocket-sized device: a screen you can light up in bed, a touch interface for quick navigation, and physical buttons for one-handed reading. If you read at night or on the move, want the light built in rather than a clip-on lamp, and prefer the roomier 4.3-inch page, this is the one built for you.

You're not the only one who noticed. Demand has been strong enough that stock keeps selling out.

"Ordered mine in the morning. by lunch it was sold out. lol!"— a reader commenting under a review video

That's the picture right now: the current Space Black run has sold out, with the next restock listed for August 6 (as-of 2026-07-27). If it's already on your list, setting a reminder now is the surest way not to miss the next batch.