The power consumption is very low, and basically only consumes power when refreshing. No backlight is required, and the last screen display content can be for a long time when the power is turned off. Onboard level conversion chip, compatible with 3.3V and 5V microcontroller interfaces. Based on the for 40PIN GPIO interface design, suitable for series motherboards, for Nano, RDK X3. SPI control interface, can be connected to for or for Nano or RDK X3 or for or STM32 and other main control boards. Size:7.5 inches Operating voltage:3.3V or 5V Communication interface:SPI Point spacing:0.205mmx0.204mm Resolution:800x480 Display color:red,black, white Viewing angle: 170 Refresh time: 4S Partial refresh: 0.4S Quick refresh: 1.5S Colour:As Shown Material:PCB Package Contents: 1 x E-Ink Display 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.