One of the big tradeoffs with Xteink's pocket-friendly e-readers is a lack of easy access to ebooks. On a Kindle or Kobo you can download tens of thousands of titles through each device's respective online bookstores, but with Xteink's devices you have to source DRM-free ebooks on your own.
Source: [The Verge](https://www.theverge.com/tech/976390/xteink-x3-x4-x4-pro-e-reader-libby-plug-ins-drm-crosspoint-reader)