The Xteink S4 e-reader has launched in China and will be released internationally soon. It operates on Google Android, allowing users to sideload e-reading apps like Kindle and KOBO. The retail price is projected to be budget-friendly. Key specifications include a 4.3-inch display, Android 11, 2GB RAM, 32GB storage, adjustable front light, USB-C charging, Wi-Fi and Bluetooth connectivity, and a 1400mAh battery, all in a lightweight design of 95g. The Xteink S4 is designed to address issues from previous models, particularly the S3 and X4, which faced problems with jailbreaking that led to screen damage and warranty returns. The new Android framework allows for user customization, aiming to enhance the reading experience and reduce technical issues.