PaperS3 is a touchable low-power e-ink display controller device launched by M5Stack, featuring the ESP32-S3 microcontroller. The front embeds a 540×960 resolution 4.7" (touch and screen integrated) e-ink display, supporting 16-level grayscale. It is paired with a GT911 capacitive touch panel, supporting dual-point touch and various gesture operations. Compared to previous products, PaperS3 adopts a full-screen structure. Unlike standard LCD screens, the e-ink display provides a better text reading experience for users while offering low power consumption, image retention on power loss, and other features.