| Name | Xteink X4 | Boox Picco |
|---|---|---|
| Image |  |
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| More views |    |
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| MSRP | $69 | $99.99 |
| Released | 2025 | 2026 |
| Availability | Discontinued | Available |
| Check price: | Xteink, Amazon | Boox, Amazon |
| Display specifications | ||
| Display type | E Ink | E Ink |
| Display size (inch) | 4.3 | 3.97 |
| Resolution (pixels W×H) | 480×800 | 480×800 |
| Color display? | No | No |
| Pixel density | 219 PPI | 235 PPI |
| Screen light? | No | Yes |
| Adjust color temperature? | NA | Yes |
| Auto-rotate? | ❌ | ❌ |
| Input options & features | ||
| Touchscreen | ❌ | ✔ |
| Button controls? | ✔ Page-turn (2×), Back, OK | ✔ Page-turn, light-switch |
| Stylus input | ❌ | ❌ |
| Dark mode | ✔ | ✔ |
| Audiobooks | ❌ | ❌ |
| Connectivity | ||
| Bluetooth | ✔ | ✔ |
| Wi-Fi? | Wi-Fi 4 | Wi-Fi 4 |
| Cellular network | ❌ | ❌ |
| Software | ||
| Operating system | Custom OS | Custom OS |
| Reading apps & e-book shops | TXT/EPUB reader | TXT/EPUB reader |
| Web browser? | ❌ | ❌ |
| Email app? | ❌ | ❌ |
| Dropbox & Google Drive? | ❌ | ❌ |
| Hardware specifications | ||
| Internal storage | 32 GB (on incl. SD card) | 16 GB (on incl. SD card) |
| RAM | 0.4 MB | 8.512 MB 8 MB PSRAM + 512 KB DRAM |
| CPU clock speed | 0.16 GHz (ESP32-C3) | 0.24 GHz dual core (ESP32-S3) |
| Other built in: | MagSafe magnet | - |
| Ports & battery | ||
| MicroSD card reader? | ✔ | ✔ |
| 3.5 mm AUX out port? | ❌ | ❌ |
| Other ports? | ❌ | ❌ |
| Battery capacity (3.7V) | 650 mAh | 920 mAh |
| (USB) charging port | USB-C | USB-C |
| Physical specifications | ||
| Waterproof? | No | No |
| Size (cm H×W×D): | 11.4×6.9×0.59 | 10.55×6.2×0.55 |
| Weight (gram): | 74 | 58 |
| Size (inch H×W×D): | 4.49×2.72×0.23 | 4.15×2.44×0.22 |
| Weight (oz): | 2.61 | 2.05 |
| Screen: flush or recessed? | Flush | Flush |
| Color options: | Black, white | White |
| Accessories in the box | 32 GB microSD card, screen protector, MagSafe ring stickers | Case (MagSafe), screen protector ×3 |
| More information | ||
| Model number | X4 | Picco |
| User guide / manual | User Guide | User Guide |
| Official site link: | Xteink.com | Boox.com |
| Brand origin | China | China |
| Check price & reviews | ||
| See price and reviews: | Xteink, Amazon | Boox, Amazon |
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