waveshare 2.13inch E-Ink Display HAT V4 Version Compatible with Raspberry Pi Raspberry Pi 5/4B/3B/Zero/Zero W/Zero 2W/Pico/Pico W/Pico WH, 250×122 Resolution SPI Interface Supports Partial Refresh

IMPORTANT: Rev2.1 is the version of the driver board, which is independent of the screen version. Currently, there is only Rev2.1; QC target V3 and V4 are screen versions, and V4 is currently being shipped. V4 version is fully compatible with V3; and it provides the demo that can realize a fast refreshing function.
This is an E-Ink display HAT for Raspberry Pi, 2.13inch, 250×122 resolution, with embedded controller, communicating via SPI interface, supports partial refresh.
Due to the advantages like ultra low power consumption, wide viewing angle, clear display without electricity, it is an ideal choice for applications such as shelf label, industrial instrument, and so on.