How big is the Xteink X4 Pocket eReader, and can I really hold it in one hand?

Absolutely! The Xteink X4 Pocket eReader is designed for ultimate portability. With its compact size, roughly the dimensions of a credit card stack but thinner, you can comfortably hold and operate it with a single hand, making it perfect for reading on the go, during commutes, or whenever you have a moment.

What kind of screen does the X4 have, and is it comfortable to read in bright sunlight?

The Xteink X4 Pocket features a glare-free E-Ink Carta HD screen. This technology mimics real paper, meaning no harsh backlight or screen reflections. It's incredibly comfortable to read on, even in direct sunlight, eliminating eye strain often associated with traditional screens.

How many books can I store on the Xteink X4, and how do I get books onto it?

The Xteink X4 Pocket comes with ample storage for thousands of books, ensuring you never have to leave your library behind. You can easily transfer books via Wi-Fi by connecting to cloud services or by using a USB-C cable to load your favorite titles from your computer.

Does the X4 Pocket support common e-book formats like EPUB or PDF?

Yes, the Xteink X4 Pocket eReader supports a wide range of popular e-book formats, including EPUB, MOBI, TXT, and PDF. This versatility means you can enjoy content from various sources without needing to convert your files.

What is the battery life like on the X4 Pocket eReader? Can it last for a long reading trip?

The Xteink X4 Pocket is engineered for exceptional battery efficiency. With its E-Ink display and optimized power management, you can expect weeks of reading on a single charge, making it your ideal companion for extended trips or busy reading schedules without the constant need to recharge.

Xteink X4 Pocket eReader - Space Black

Fast Shipping

Ship out within 1-5 business days

30-Day Return

Hassle-Free & 100% Risk-Free

One-Year Warranty

100% Authentic & Direct Support

Quick Support

support@xteink.com

Woman reading on ultra-thin eReader during commute, lightweight portable device for modern readers

Man reading eReader at night campsite, enjoying portable lightweight device for outdoor adventures

Ultra-thin eReader displaying text, held near laptop, ideal for portable reading and eye comfort

Person holding white Xteink eReader in bed, cozy reading setup with warm lamp light

Ultra-thin eReader displaying minimalist text, lightweight portable design for comfortable reading

Featherlight 74G

White smartphone with eReader case displaying minimalist text design for reading on fingertips

Magnetic Back

Ultra-thin eReader fitting in shirt pocket, lightweight portable design for modern readers

Pocket Size

16 GB

Storage

TXT/EPUB

Format

650mAh

Battery

219 PPi

Resolution

BMP/JPG

Image

Type-C

Charging

Ultra-thin eReader with minimalist design, displaying inspirational text on e-ink screen, lightweight and portable for modern readers

Xteink X3

Ultra-thin eReader with minimalist design, displaying inspirational text on e-ink screen for comfortable reading.

Xteink X4

Rotate device icon showing screen rotation symbol for eReader display adjustment

3.7" E Ink Display

4.3" E Ink Display

Feather icon in circle, symbolizing lightweight eReader design for easy reading

Weight: 58g

Weight: 77g

Checkerboard pattern inside circular frame, black and white design

PPI: 259

PPI: 219

Circular icon with lightning bolt symbol, indicating fast charging or power feature

Four ultra-thin eReader designs with minimalist cameras and paper-like screens for modern reading

Optimized magnetic designfor wider phone compatibility

Ultra-thin eReader design with minimalist front and rear camera layout, ideal for portable reading

Magnetic design with limited compatibility

Battery life and time icon for eReader device performance

Orange checkmark icon indicating confirmation or success

Clock & Battery Indicator

Clock & Battery Indicator

Xteink X3

Xteink X4

Minimalist black line art of concentric circles with atomic-style center design

Gyroscope Shake-to-turn-page

Gyroscope

NFC contactless payment symbol with wireless signal waves

NFC

Magnetic Pogo Pin (Cable included)

Type-C (Not included)

Four rounded squares in a circle, minimalist icon design

Xteink APP Supported

Battery icon indicating long-lasting power for eReaders

650 mAh Single charge on the eReader lasts up to 14 days, based on 1-3 hours of reading per day.

Xteink X4 ultra-thin eReader with packaging, quick start guide, screen protector, and accessories on white background

Display 4.3 inch

Resolution 220 PPI

Dimensions 114 × 69 × 5.9 mm (4.49" × 2.72" × 0.23")

Weight 77g

CPU ESP32

Storage Comes with 16 GB microSD card, supports expansion up to 256 GB

Connectivity Wi-Fi 2.4 GHz & Bluetooth® wireless technology

Ports USB-C

Physical Buttons Power Button, Page-Turn Buttons

Battery 650 mAh (*A single charge on the eReader lasts up to 14 days, based on 1–3 hours of reading per day.)

Supported Formats Document: EPUB, TXT / Image: JPG, BMP / Fonts: BIN

Color Options Space Black / Frost White

Languages English, Simplified Chinese, Traditional Chinese, and Japanese

Others Does not support 3rd-party Apps

Front light No

Touchscreen No

Battery 650 mAh(*A single charge on the eReader lasts up to 14 days, based on 1–3 hours of reading per day.)

Connectivity Wi-Fi 2.4 GHz

Ports USB Type-C

Physical Buttons Power Button, Page-Turn Buttons

1 × X4 E-Reader

1× Quick Start Guide

1× MicroSD Card

1× Matte Screen Protector

2× Magnetic Stick-on Rings

FAQs

Unlike phones or tablets, eReaders are designed purely for reading. The e-ink screen is easy on the eyes and perfectly visible under sunlight, the battery lasts for weeks, and the lightweight design makes it convenient to carry anywhere. For avid readers and learners, it’s a healthier and more focused way to enjoy books.

Xteink focuses on minimalist design and ultimate portability. The X4 fits right in your palm, weighing only 74g, yet holds thousands of books. With its true “paper-like” display and intuitive user experience, it’s built to make reading effortless, pure, and inspiring.

Absolutely. The X4 is about the size and weight of a smartphone, turning your pocket into a portable library. Whether you’re on the subway, at a café, or on a long flight, it transforms idle moments into quality reading time.

Yes. The X4 requires a magnetic ring to securely attach and pair with your phone.

No. A charging cable is not included in the box.

Item added to your cart

Xteink X4 Pocket eReader