No backlight, keeps displaying last content for a long time even when power down SPI interface, for connecting with controller boards like Pi/Jetson Nano/STM32, etc. Ultra low power consumption, basically power is only required for refreshing Onboard voltage translator, compatible with 3.3V / 5V MCUs Comes with development resources and manual (driver board circuit diagram, examples for Raspberry Pi/Jetson Nano/STM32):https://www.waveshare.com/wiki/2.66inch_e-Paper_Module