Xteink X3 3.7-Inch E-Ink Pocket Reader (Open-source Version)

Features:

📖Lightweight Pocket Design: Weighing only 58g and measuring approximately 5.1mm thick, the X3 features a compact 3.7-inch form that fits easily into a pocket. Its lightweight profile supports comfortable one-hand reading during commuting, travel, and short reading sessions.
📖259 PPI E-Ink Paper-Like Display: The 3.7-inch E-Ink screen delivers 259 PPI resolution at 528×792 pixels without backlighting or touch input. The paper-like display provides clear text and images with a glare-free, flicker-free viewing experience suited to extended reading.
📖Magnetic Phone Second Screen: The rear magnetic system and adhesive metal rings allow the X3 to attach to compatible phone surfaces. Switch from a phone display to an E-Ink reading screen when desired, while also using the device for photos, clocks, and customized desktop content.
📖Developer Edition with Firmware Access: The Developer Edition provides unlocked firmware access without advertising or notification windows, supporting customized reading workflows and third-party firmware installation. It is designed for electronics enthusiasts who enjoy exploring and modifying device software. The system supports the official Xteink APP only and does not support third-party apps.
📖Gyroscope, NFC & Long Battery Life: Turn pages with a shake gesture through the built-in gyroscope or use the physical page buttons for one-hand operation. NFC supports copying compatible unencrypted access cards. The 650mAh battery provides approximately 10–14 days of typical use, based on 1–3 hours of reading per day.

Specifications:

.Product Model: X3
.Material: ABS + Electronic Components
.Product Version: English Version (Developer Edition)
.Color: Mist Gray White
.Display: 3.7-inch E-Ink Screen, 259 PPI, 528 × 792 Resolution, No Backlight, Non-Touchscreen
.Storage: 16GB Memory Card Included (Pre-Installed in Card Slot), Supports Expansion up to 256GB
.Supported Formats: Documents: EPUB/TXT; Images: JPG/BMP; Fonts: BIN
.System Languages: English, Chinese, Japanese, Turkish
.Battery: 650mAh; Approximately 10–14 Days per Charge (Based on 1–3 Hours of Reading Daily)
.Connectivity: 2.4GHz Wi-Fi + Wireless
.Charging Port: Magnetic Pogo Pin (Dedicated Charging Cable Included; Not Type-C)
.Physical Buttons: Power Button + Dual Page-Turn Buttons
.Special Features: NFC (Supports Compatible Unencrypted Access Cards), Gyroscope Shake-to-Turn Pages, Magnetic Phone Attachment, Clock / Photo / Customized Desktop Modes
.System: Unlocked Firmware Access (Developer Edition), No Ads or Notifications, Compatible with Xteink Official APP Only, Does Not Support Third-Party Apps
.Product Weight: 58g
.Package Weight: 200g
.Product Dimensions: 9.76 x 6.37 x 0.51cm
.Package Dimensions: 12 x 14.3 x 1.5cm
.Packaging: Box
.Age: 16+