This is the E-paper display HAT for the Raspberry Pi. The display is 2.7″ diagonal and 264×176 pixels. The board features a battery-backed DS3231 real-time clock chip and is very accurate (to within 3 minutes per year) even when off-line. There is a RGB led for status indication and four pushbutton switches are supplied with each display which can be fitted, if required, to provide control functions. E-paper displays are very low energy, only consuming power when the display information is updated, and retaining the most recently written information for very long periods, even when power is removed.
An auto-install script here can update your Pi to the latest version, then install all the necessary packages and the example code. See the included README.txt or product support page for full instructions. Example code in C and python is also available from our github repository.