The XTEINK X3: The Ultralight E-Reader That Might Just Solve Your Backcountry Reading Dilemma

Published August 21, 2026, 12:59 PM

The biting wind and the sudden fury of an August snowstorm in Alaska last summer served as an abrupt, yet ultimately welcome, interruption to my first backpacking expedition in the vast wilderness of Gates of the Arctic National Park. Our meticulously planned route, ambitious and brimming with the promise of rugged exploration, was rendered impassable by the unseasonable blizzard. Faced with the stark reality of a whiteout and plummeting temperatures, the only prudent course of action was to hunker down, surrender to the elements, and wait for the storm to relent. While the prospect of extended hours confined to a tent is hardly the ideal scenario for any seasoned hiker, this enforced respite provided an unexpected opportunity for reflection and a surprising discovery. Wrapped in the comforting warmth of my sleeping bag, with a curated collection of digital literature at my fingertips, I found myself deeply grateful for the foresight that led me to load my e-reader. Without that stack of digital pages, the day would have undoubtedly devolved into a monotonous, soul-crushing exercise in boredom, punctuated only by the howling wind and the relentless patter of snow against the tent fabric.

This Alaskan experience, however, is a stark contrast to my usual approach to packing for backpacking trips. More often than not, I find myself locked in an internal debate, weighing the perceived benefits of bringing a physical book or my e-reader against the undeniable penalty of added weight in my pack. The perennial question echoes: is the marginal increase in ounces truly worth the potential enjoyment or mental stimulation it offers? Will I be too utterly exhausted, my muscles screaming in protest from a day of strenuous hiking, to even muster the energy to turn a page by the time I finally make camp? In my pursuit of ultralight packing, a philosophy that prioritizes shedding every gram possible to enhance mobility and reduce physical strain, I frequently make the difficult decision to leave my reading materials at home. This decision, almost invariably, leads to a pang of regret once the sun dips below the horizon, plunging the backcountry into darkness and amplifying the silence, leaving me with little more than my own thoughts and the crackling of a campfire for company. It was this recurring dilemma, this almost habitual self-deprivation of a simple pleasure, that made the announcement of a new, potentially revolutionary device pique my interest. The world’s smallest e-reader, a gadget promising to redefine portability and accessibility for backcountry readers, may have finally offered a solution to my ongoing, weight-conscious conundrum.

Enter the X3 from XTEINK, a Chinese technology company that appears to be challenging the established norms of the e-reader market with a device that is not only ultralight but also astonishingly diminutive. Designed to be so compact that it can “disappear in your pocket,” the X3 presents an intriguing proposition for anyone seeking to integrate literary enjoyment into their outdoor pursuits without compromising on pack weight. Its most striking feature is its sheer portability: the small, magnetized device is engineered to adhere to the back of a smartphone, ensuring that a book is always within easy reach. The underlying philosophy is ingenious: by making books as readily accessible as the ubiquitous apps that dominate our digital lives, XTEINK aims to subtly encourage reading over mindless scrolling. Furthermore, the price point is remarkably competitive, retailing at a mere $69, a cost that is significantly less than a week’s worth of specialized freeze-dried meals, a common staple for many backpackers. This affordability, coupled with its radical portability, immediately positioned the X3 as a potential game-changer, a beacon of hope for my persistent backpacking reading woes. The question was no longer if I should consider it, but rather how it would perform in real-world conditions. I resolved to put one to the test.

Upon first handling the X3, the descriptor “adorably small” proved to be an understatement. Its 3.7-inch e-ink display, a technology renowned for its paper-like readability and low power consumption, possesses a surface area that is, in fact, slightly smaller than a standard playing card. Measuring a mere 5mm in thickness, it boasts an almost impossibly slim profile. The device fits comfortably in the palm of my hand, feeling less like a gadget and more like a delicate, electronic bookmark. Its weight is equally astonishing: at a mere 58 grams, it is comparable to a standard Snickers bar, a far cry from the heftier devices I usually consider. For context, my own 10th generation Kindle Oasis, a premium e-reader, tips the scales at a substantial 188 grams without its protective case. Even the lightest model in Amazon’s current Kindle lineup, featuring a 6-inch display, weighs in at a considerable 158 grams and carries a price tag of $110, nearly double that of the X3. This stark comparison immediately highlights the X3’s unique selling proposition: extreme portability and affordability in a category often dominated by larger, more expensive devices.

Initially, the X3’s diminutive size did raise some reservations. It is, after all, significantly smaller than the screen of my everyday smartphone. In a world where smartphones are already capable of storing vast libraries of books and offer larger, more immersive displays, the appeal of an additional, dedicated reading device seemed questionable. However, like many dedicated hikers, I am acutely aware of the preciousness of my phone’s battery life. This device is my lifeline for navigation, my primary tool for capturing the breathtaking scenery, and my ultimate emergency communication device. The prospect of offloading the demands of reading from my phone onto a separate, specialized gadget that conserves its own power efficiently is, therefore, highly appealing. It represents a strategic division of labor, ensuring that each device serves its primary purpose without compromising the functionality of the others.

Setting up the X3 with XTEINK’s companion smartphone app proved to be a refreshingly straightforward process. The app, which facilitates wireless syncing between the e-reader and your phone, is the primary interface for managing your library and device settings. While the app itself is functional, it does exhibit some minor quirks that are likely attributable to its translation from Chinese. Certain pages within the app present English that feels slightly unnatural, and the precise function of some of the interface elements isn’t immediately intuitive. Despite these minor linguistic and navigational ambiguities, the core functionalities required for a seamless user experience are readily accessible and easy to master. Transferring e-books, a crucial step for any e-reader, is a breeze. Furthermore, the app offers some delightful customization options, such as the ability to set personalized wallpapers, which adds a touch of individual flair to the device. These small touches, while not essential to the core function, contribute to a more engaging and personalized user experience.

The X3 itself eschews a touchscreen interface, a design choice that contributes to its simplicity and, arguably, its durability. Navigation is handled by four prominent physical buttons. While this button-based control system requires a brief period of adjustment, it quickly becomes second nature. Once the X3 is connected to Wi-Fi, users have multiple options for transferring e-books. Files can be wirelessly beamed from your smartphone or computer, or the included card reader can be utilized to add e-books stored on other devices. I found the process of transferring EPUB files, a widely supported e-book format that I already owned or had downloaded from various sources, to be both fast and remarkably simple. However, a notable limitation emerged when attempting to integrate digital library books. Like many avid readers, I frequently borrow e-books from my local library through the Libby app, which seamlessly integrates with Kindle devices. Unfortunately, I have yet to discover a method for reading library-purchased books on the X3. This means that, for the time being, my literary consumption on this device will be limited to purchased e-books or freely available EPUB, PDF, TXT, and MOBI files. This is a significant consideration for users who rely heavily on digital library services for their reading material.

Despite its limited screen real estate, the reading experience on the X3 is, surprisingly, quite enjoyable. The e-ink display delivers crisp, clear text that faithfully mimics the appearance of ink on paper, a hallmark of quality e-readers. Page turns are executed with effortless grace, either by a simple press of a button or, for a touch of novelty, by shaking the device. While the display is undoubtedly small, the default font size is comparable to that found on most standard e-readers and books, making it perfectly legible for general reading. However, adjusting the font size directly on the device is a slightly more intricate process than on a Kindle. After a few minutes of dedicated button manipulation, I was able to toggle between two font sizes. The default setting was more than sufficient for my needs, but users with visual impairments might find it challenging to find a sufficiently large font directly on the device. Fortunately, XTEINK offers more advanced font customization options through its app or via Crosspoint, a powerful open-source e-reader software. While these methods provide extensive personalization, they do require a degree of technical savvy and a willingness to invest a bit more time in the setup process.

The true test of any piece of backcountry gear lies in its performance when subjected to the rigors of the wild. In the context of the X3, the critical question is its battery life. After several weekend excursions, I can confidently report that I have yet to experience a depletion of its power reserves. XTEINK estimates that the 650 mAh battery can sustain between 10 and 14 days of use, assuming one to three hours of reading per day. This duration is more than adequate for the vast majority of backpacking trips, with the exception, perhaps, of extended thru-hikes that stretch into weeks or months. While it does represent an additional device to carry compared to reading on one’s smartphone, its feather-light 58-gram weight is likely less than that of a bulkier power bank, which would be essential to keep a phone charged for extended periods. This comparison is particularly relevant when considering the battery life of larger e-readers; Kindle does not publicly disclose the battery capacities of its devices, but they claim that their basic model can last up to six weeks on a single charge, a testament to the efficiency of e-ink technology.

One crucial aspect for any outdoor equipment is its resilience to the elements. The X3, it must be noted, is not waterproof, and XTEINK makes no explicit claims regarding its water resistance. This contrasts with some of the more robust, full-sized e-readers available on the market. However, its diminutive size offers a simple workaround: the X3 can easily be slipped into a snack-sized plastic bag, providing a basic level of protection against moisture. Furthermore, its incredibly small form factor makes it easy to tuck away into a protected internal pocket of a backpack, minimizing its exposure to the elements. It is also important to note that the e-ink display on the X3 lacks a built-in backlight. This means that nighttime reading will necessitate the use of an external light source, such as a headlamp. For those who prioritize integrated illumination, XTEINK’s newest model, the X4 Pro, addresses this limitation. It boasts a frontlight, a slightly larger display, a touchscreen interface, extended battery life, and, remarkably, weighs even less at 72 grams, further pushing the boundaries of portable e-reading.

Gimmick or Gamechanger?

In the final analysis, the XTEINK X3 presents a compelling case for its inclusion in the backcountry pack of any reader who prioritizes minimizing weight without sacrificing literary enjoyment. Its incredibly light weight and unparalleled portability make it an immediate replacement for my heavier Kindle on trips where every ounce counts. But is it a device worth carrying in addition to a smartphone? My experience suggests that the answer is a resounding yes. The distinct reading experience offered by an e-ink screen, devoid of the blue light and constant illumination of a smartphone display, is fundamentally different. It evokes a more serene, paper-like sensation that is far more conducive to extended reading sessions. On trips, much like that unexpected Alaskan snowstorm, where I find myself with ample downtime and a desire to immerse myself in a narrative for hours on end, the ability to do so without the anxiety of draining my phone’s battery is a luxury well worth the mere 58 grams it adds to my pack.

Perhaps the most profound benefit of the X3, however, extends beyond its physical attributes. My primary motivation for venturing into the wilderness is to disconnect from the incessant demands of the digital world, to escape the endless cycle of notifications and social media feeds. While reading is undoubtedly a more enriching activity than mindless scrolling, the longer my smartphone remains buried deep within my pack, the more fully I am able to engage with my surroundings and truly benefit from the restorative power of the hike or backpacking trip. The X3, by offering a dedicated and unobtrusive platform for reading, directly supports this goal. It allows me to indulge in the pleasure of literature without succumbing to the gravitational pull of my phone. This alone is a powerful argument for packing the X3 on my next adventure, a testament to its potential to enhance, rather than detract from, the core experience of being in nature. It is not merely a gimmick; it is a thoughtfully designed tool that addresses a genuine need for portable, weight-conscious, and distraction-free reading for the modern outdoor enthusiast.