Xteink X3 vs Xteink X4 Pro
Better figure, where one is clearly better
| XteinkX3 | XteinkX4 Pro | |
|---|---|---|
| Overview | ||
| Released | April 2026 | July 2026 |
| Screen | ||
| Screen size | 3.7″ | 4.3″ |
| Sharpness | 259 pixels per inch (better) | 219 pixels per inch |
| Colour | No | No |
| Front light | No | Yes, adjustable warmth |
| Display detail | E Ink, 259 ppi; not a touchscreen | E Ink touchscreen, 219 ppi |
| Front light | – | Front light with adjustable brightness and warm/cool colour temperature |
| Page turns and refresh | Gyroscope shake-to-turn as well as the page-turn buttons | – |
| Reading and writing | ||
| Stylus | No | No |
| Page-turn buttons | Yes | Yes |
| Audiobooks | No | No |
| Storage | 16 GB | 16 GB |
| Software | Other | Other |
| Formats | EPUB, TXT; JPG and BMP images; BIN fonts | EPUB, TXT; JPG and BMP images; BIN and XTF fonts (TTF promised in a later update) |
| Book store | None; books are sent from the Xteink app (no third-party apps) or copied to the microSD card with the included card reader | None; books are sent from the Xteink app over Wi-Fi or copied over USB |
| Design | ||
| Weight | 58 g (better) | 72 g |
| Materials | Built-in magnet for phones; adhesive metal rings included for other phones | Built-in magnets for phones; adhesive metal rings included for other phones |
| Size | 97.6 × 63.7 × 5.1 mm | 111 × 69 × 5.95 mm |
| Colours | Space Black, Mist Gray (Frost White in Xteink's spec list) | Space Black |
| In the box | X3, 16 GB microSD card (fitted), card reader, Quick Start Guide, matte screen protector, 2 adhesive metal rings, magnetic pogo-pin charging cable | X4 Pro, Quick Start Guide, microSD card, matte screen protector, 2 adhesive metal rings, magnetic charging adapter |
| Connections and battery | ||
| Battery life detail | 650 mAh; 10–14 days on a charge at 1–3 hours of reading a day; full charge in 1–2 hours | 1100 mAh; full charge in 1–2 hours |
| Charging | Magnetic pogo-pin cable (included) | Pogo pins, with a magnetic pogo-pin-to-USB-C adapter included; no cable in the box |
| Connectivity | Wi-Fi (2.4 GHz only), Bluetooth, NFC (unencrypted card emulation), microSD slot (16 GB card included, up to 256 GB) | Wi-Fi (2.4 GHz only), Bluetooth, microSD slot (16 GB card included, up to 256 GB) |
