Xteink X4

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While you can use it as a standalone device, it also features a magnetic attachment for compatible smartphones, adding versatility to its functionality. Measuring at 114 x 69 x 5.9 millimeters and weighing only 74 grams, it’s designed for convenience. Instead of a traditional SoC, this e-reader operates on an ESP32, a popular choice among makers. It comes equipped with a 32 GB microSD card and supports WiFi and Bluetooth, making content transfers simple and efficient. Although the 650 mAh battery is relatively small, you can expect around 14 days of use with daily sessions of one to three hours.

The display spans 4.3 inches diagonally and boasts a pixel density of 220 PPI. While the Xteink X4 is marketed for a wide array of tasks, the compact screen limits the amount of text displayed on each page, which means you’ll find yourself flipping pages and adjusting lines often. However, it excels in showing boarding passes, membership cards, and calendars with ease. It supports various file types, including ePUB, text files, BMP, and JPG. Do keep in mind that the device lacks a touchscreen, so the side buttons play a crucial role in its operation.

Detailed Information + Size

Display: 4.3 inches

Resolution: 220 PPI

Dimensions: 114 × 69 × 5.9 mm (4.49 inches × 2.72 inches × 0.23 inches)

Weight: 74 grams

CPU: ESP32

Storage: Standard 32 GB microSD card, expandable up to 512 GB

Connectivity: Wi-Fi 2.4 GHz and Bluetooth® wireless technology

Portals: USB-C

Physical Buttons: Power button, Page up button

Battery: 650 mAh (*The e-reader can last up to 14 days on a single charge, based on 1-3 hours of reading per day.)

Supported Formats: Documents: EPUB, TXT / Images: JPG, BMP / Fonts: BIN

Color Options: Space Black / Frost White

Languages: English, Simplified Chinese, Traditional Chinese, Chinese and Japanese

Other: Third-party applications not supported

Front Light Source: None

Touchscreen: None

POWER + CONNECTIVITY

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