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 Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano Onboard 4x Keys; Onboard voltage translator, compatible with 3.3V/5V MCUs; SPI interface, for connecting with other controller boards like Raspberry/Arduino/Nucleo, etc. Comes with development resources and manual (examples for Raspberry Pi/Jetson Nano/Arduino/STM32),download link: www.waveshare.com/wiki/2.7inch_e-Paper_HAT