No backlight required, the last screen display can be kept for a long time after power failureThe power consumption is very low, basically only consuming power when refreshingThe following only applies to the module version:Based on for Raspberry Pi 40PIN GPIO interface design, Compatible with Raspberry Pi, for Jetson NanoAdopting the for Raspberry Pi HAT+ standard, the interoperability of the expansion board is improved, helping developers to design and develop faster, use various external devices more easily, and expand the functions and per formance of the for Raspberry PiReserved SPI communication interface for easy access to for Raspberry Pi / for Arduino / STM32 / ESP32 and other main control boardsBare screen version: 3.3VModule version: 3.3V/5VCommunication interface:3-wire SPI,4-wire SPIDisplay colors: red, yellow, black, whiteGrayscale:2fast refresh:13sGlobal refresh:21sRefresh power consumption:Less than 90mWpoint distance:0.108 x 0.108 (mm)Sleep current Less than 0.01uA (close to 0)resolution:800 x 480 pixelsViewing angle:Greater than 170°(The product printed words may vary depending on the batch, but this does not affect use) Color:As Shown Material: LCD Package Contents:1 * 3.97inch e-Paper(The colors and styles of screws are random, and the specification is not accepted) New Arrival