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/Jetson Nano/STM32, etc. 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):www.waveshare.com/wiki/2.66inch_e-Paper_Module_(B)