Comparing the XTeink X4 and M5 PaperS3

A comparison of the two small ereader devices available in January 2026. The X4 is a dedicated ereader, while the Paper S3 is a hacking display with a capacitive, single-point touch screen. XTeink X4: https://www.xteink.com/products/xteink-x4 M5 Paper S3: https://shop.m5stack.com/products/m5papers3-esp32s3-development-kit X4 Resource Hub: https://readme.club X4 web flashing tool: https://xteink.dve.al/ Subreddit: https://www.reddit.com/r/xteinkereader/ XTEINK X4: Display: 4.3-inch monochrome e-ink, 480×800 resolution (~220 ppi), no touchscreen, no frontlight. Processor: ESP32-class microcontroller, single core, up to ~240 MHz (exact model not publicly specified). RAM: 128 MB. Storage: microSD card included (typically 32 GB), expandable. Battery: ~650 mAh. Weight: ~74 g. Intended use: dedicated, minimalist e-reader with closed firmware. M5Stack Paper S3: Display: 4.7-inch monochrome e-ink, 960×540 resolution (~235 ppi), capacitive touchscreen (GT911), 16-level grayscale, no frontlig