No backlight is required, and the last screen display content can be for a long time when the power is turned off. The power consumption is very low, and basically only consumes power when refreshing. Working voltage: bare screen version: 3.3V Display colors: red, yellow, black, white Communication interface: 3-wire SPI, 4-wire SPI Grayscale level: 2 Global refresh: 21 seconds Display size: 259.76x91.68 (mm) Dot pitch: 0.191 x 0.191 (mm) Resolution: 1360 x 480 pixels Refresh power consumption:Less than 70 mW Sleep current:Less than 0.01uA (close to 0) Viewing angle: 170 Due to different batches, there may be differences in product appearance and printed text, which not affect use. Color: As Shown Material: PCB+LCD 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.