4.26inch e-Paper HAT No backlight is required, and the display content of the last screen can be maintained for a long time when the power is turned off. The power consumption is very low, basically only consuming power when refreshing. Based on for Raspberry Pi40PIN GPIO interface design, suitable for series SPI control interface, can be connected to for / for Nano / for RDK X3 / for /STM32 and other main control boards Onboard level conversion chip, compatible with 3V and 5V microcontroller interfaces Provide complete supporting information manuals (driver board schematic diagram, for /for Nano/for /for STM32 and other sample programs) Due to different batches, the appearance, color and printed words of the product , which will not affect the use Colour:White Material:PCB Package Contents: 1 x Display Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.