No backlight is required, and the last screen display content can be for a long time when the power is off The power consumption is very low, and basically only consumes power when refreshing Based on for the Raspberry Pi40PIN GPIO interface design, suitable for series motherboards and Nano Reserved SPI control interface, can be connected to for / Nano/for /STM32 and other main control boards Onboard level conversion chip, compatible with 3.3V and 5V microcontroller interfaces Size: 7.5 inches Operating voltage: 3.3V Communication interface: 3-wire SPI, 4-wire SPI Point spacing: 0.204mmx0.204mm Resolution: 800x480 Display color: Red,Yellow,Black,White Grayscale: 2 Viewing angle: 170° Color: As Shown Material: PCB Package Contents: 1 * 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.