Xteink S4 vs Xteink X3
Better figure, where one is clearly better
| XteinkS4 | XteinkX3 | |
|---|---|---|
| Overview | ||
| Released | September 2026 (early information) | April 2026 |
| Screen | ||
| Screen size | 4.3″ | 3.7″ |
| Sharpness | 220 pixels per inch | 259 pixels per inch (better) |
| Colour | No | No |
| Front light | Yes, adjustable warmth | No |
| Display detail | 4.3-inch E Ink multi-touch panel; 220 ppi (Good e-Reader; Xteink hasn't published the resolution or ppi) | E Ink, 259 ppi; not a touchscreen |
| Page turns and refresh | – | Gyroscope shake-to-turn as well as the page-turn buttons |
| Front light | Front light with adjustable warm/cool colour temperature | – |
| Reading and writing | ||
| Stylus | No | No |
| Page-turn buttons | Yes | Yes |
| Audiobooks | Yes | No |
| Storage | 32 GB (better) | 16 GB |
| Software | Android | Other |
| Formats | More than 10 formats natively (Xteink hasn't listed them), plus whatever installed reading apps open | EPUB, TXT; JPG and BMP images; BIN fonts |
| Book store | None built in; Android 11 with mainstream reading apps allowed, such as Kindle, Kobo and KOReader (Xteink doesn't say whether Google Play is included) | None; books are sent from the Xteink app (no third-party apps) or copied to the microSD card with the included card reader |
| Design | ||
| Weight | 95 g | 58 g (better) |
| Materials | Magnetic back for phones | Built-in magnet for phones; adhesive metal rings included for other phones |
| Size | 6.98 mm thick, about 95 g; Xteink hasn't given the height and width | 97.6 × 63.7 × 5.1 mm |
| Colours | – | Space Black, Mist Gray (Frost White in Xteink's spec list) |
| 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 |
| Connections and battery | ||
| Battery life detail | 1400 mAh | 650 mAh; 10–14 days on a charge at 1–3 hours of reading a day; full charge in 1–2 hours |
| Charging | USB-C (Good e-Reader, The eBook Reader) | Magnetic pogo-pin cable (included) |
| Connectivity | Wi-Fi, Bluetooth, USB-C; 2 GB RAM; 32 GB built-in storage, no microSD slot | Wi-Fi (2.4 GHz only), Bluetooth, NFC (unencrypted card emulation), microSD slot (16 GB card included, up to 256 GB) |
| Audio | Bluetooth audio for listening (Good e-Reader); Xteink doesn't say whether there's a speaker | – |
