Waveshare Tri-Color 4.2inch E-Ink Display Module Resolution 400x300 3.3v E-Paper Electronic Screen Panel SPI Interface for Raspberry Pi/STM32/Arduino/Jetson Nano

No backlight, keeps displaying last content for a long time even when power down Ultra low power consumption, basically power is only required for refreshing SPI interface, for connecting with controller boards like Raspberry Pi/Arduino/Nucleo, etc. Onboard voltage translator, compatible with 3.3V/5V MCUs Comes with development resources and manual (examples for Raspberry Pi/Jetson Nano/Arduino/STM32), download link:www.waveshare.com/wiki/4.2inch_e-Paper_Module_(B)