Without backlight, the latest content can be displayed for a long time even if the power is off Ultra-low power consumption, basically only need to refresh the power supply. Spi interface, requires the least io pin With development and manual functions ( pico w/c++ and micropython examples) The electronic paper display uses microcapsule electrophoresis technology for indication. The principle is: after an electric field is applied, the particles suspended in the transparent liquid will move to the side of the microcapsule, and the microcapsule will be visible by reflecting the ambient light. And traditional printing paper. The electronic paper display screen will clearly display images/text under light or , does not require backlight, and has a viewing angle of nearly 180. Because of its paper effect, it is usually used as an e-reader. Material:plastic colour:Blue Package Contents: 1 x Module for Pico Only the above package content, other products are not included. Note: Light 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.