Xteink S4 vs Xteink X4 Pro
Better figure, where one is clearly better
| XteinkS4 | XteinkX4 Pro | |
|---|---|---|
| Overview | ||
| Released | September 2026 (early information) | July 2026 |
| Screen | ||
| Screen size | 4.3″ | 4.3″ |
| Sharpness | 220 pixels per inch (better) | 219 pixels per inch |
| Colour | No | No |
| Front light | Yes, adjustable warmth | Yes, adjustable warmth |
| 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 touchscreen, 219 ppi |
| Front light | Front light with adjustable warm/cool colour temperature | Front light with adjustable brightness and 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 and XTF fonts (TTF promised in a later update) |
| 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 over Wi-Fi or copied over USB |
| Design | ||
| Weight | 95 g | 72 g (better) |
| Materials | Magnetic back for phones | Built-in magnets 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 | 111 × 69 × 5.95 mm |
| Colours | – | Space Black |
| In the box | – | X4 Pro, Quick Start Guide, microSD card, matte screen protector, 2 adhesive metal rings, magnetic charging adapter |
| Connections and battery | ||
| Battery life detail | 1400 mAh | 1100 mAh; full charge in 1–2 hours |
| Charging | USB-C (Good e-Reader, The eBook Reader) | Pogo pins, with a magnetic pogo-pin-to-USB-C adapter included; no cable in the box |
| Connectivity | Wi-Fi, Bluetooth, USB-C; 2 GB RAM; 32 GB built-in storage, no microSD slot | Wi-Fi (2.4 GHz only), Bluetooth, 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 | – |
