| Name | Metalio E Ink 4 Plus | Xteink X4 Pro |
|---|---|---|
| Image |  |
 |
| More views | - |    |
| MSRP | $109.99 | $99 |
| Released | 2026 | 2026 |
| Availability | Available | Available |
| Check price: | Aliexpress, Litnxt | Xteink, Amazon |
| Display specifications | ||
| Display type | E Ink | E Ink |
| Display size (inch) | 4.7 | 4.3 |
| Resolution (pixels W×H) | 684×1216 | 480×800 |
| Color display? | No | No |
| Pixel density | 297 PPI | 219 PPI |
| Screen light? | Yes (optional) | Yes |
| Adjust color temperature? | Yes | Yes |
| Auto-rotate? | ? (gyro available) | ❌ |
| Input options & features | ||
| Touchscreen | ✔ | ✔ |
| Button controls? | ✔ Page-turn, AI button, menu | ✔ Page-turn (next/prev page), Home |
| Stylus input | ❌ | ❌ |
| Dark mode | ? | ✔ |
| Audiobooks | ? | ❌ |
| Connectivity | ||
| Bluetooth | ✔ | ✔ |
| Wi-Fi? | Wi-Fi | Wi-Fi 4 |
| Cellular network | ✔ 4G via SIM (optional, +~$30) | ❌ |
| Software | ||
| Operating system | Custom OS + companion app | Custom OS + companion app |
| Reading apps & e-book shops | TXT/EPUB reader | TXT/EPUB reader |
| Web browser? | ❌ | ❌ |
| Email app? | ❌ | ❌ |
| Dropbox & Google Drive? | ❌ | ❌ |
| Hardware specifications | ||
| Internal storage | 16 GB (on incl. SD card) | 16 GB (on incl. SD card) |
| RAM | 16 MB | 8.512 MB 8 MB PSRAM + 512 KB DRAM |
| CPU clock speed | 0.32 GHz dual core (ESP32-S31) | 0.24 GHz dual core (ESP32-S3) |
| Other built in: | Microphones, speaker, vibration motor, 2 MP cam (on 4G version +~$30) | MagSafe magnet |
| Ports & battery | ||
| MicroSD card reader? | ✔ | ✔ |
| 3.5 mm AUX out port? | ❌ | ❌ |
| Other ports? | ❌ | ❌ |
| Battery capacity (3.7V) | 2000 mAh | 1100 mAh |
| (USB) charging port | USB-C | Pogo pins |
| Physical specifications | ||
| Waterproof? | No | No |
| Size (cm H×W×D): | 12.2×7.1×0.78 | 11.1×6.9×0.595 |
| Weight (gram): | 110 | 72 |
| Size (inch H×W×D): | 4.80×2.80×0.31 | 4.37×2.72×0.23 |
| Weight (oz): | 3.88 | 2.54 |
| Screen: flush or recessed? | Flush | Flush |
| Color options: | White | Black, white/gray |
| Accessories in the box | Case, lanyard | 16 GB microSD card, screen protector (matte), MagSafe ring stickers, magnetic charging adapter |
| More information | ||
| Model number | ? | X4 Pro |
| User guide / manual | Not available | User Guide |
| Official site link: | Metalio.world | Xteink.com |
| Brand origin | China | China |
| Check price & reviews | ||
| See price and reviews: | Aliexpress, Litnxt | Xteink, Amazon |
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