Low power, wide viewing angle, paper-like effect without electricity. Ideal for price tags, shelf labels, industrial instruments... No backlight is required, and the display content of the last screen can be maintained for a long time when the power is off. The power consumption is very low, and basically only consumes power when refreshing. Colour:As Shown Material:plastic Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 * E-Paper E-Ink Display Module 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.