No backlight, keeps displaying last content for a long time even when power down Ultra low power consumption, basically power is only required for refreshing. SPI interface, requires minimal IO pins Advantages of EINK: E-paper display utilizes microcapsule electrophoretic technology for displaying, the principle is: particles suspended in clear fluid will move to sides of microcapsule when electric field is applied, making the microcapsule become visible by reflecting ambient light, just as traditional printed paper. E-paper display will clearly display images/texts under lamplight or , requires no backlight, and features nearly up to 180 viewing angle. It is usually used as e-reader due to its paper-like effect. Application:Suitable for price Tags, asset/equipment Tags, shelf labels, conference name tags... color: blue Material: PCB Features No backlight, keeps displaying last content for a long time even when power down Ultra low power consumption, basically power is only required for refreshing SPI interface, requires minimal IO pins Specifications Specifications Operating voltage: 3.3V/5V Interface: 3-wire SPI, 4-wire SPI Outline dimension: 89.5mm x 38mm Display size: 66.89mm x 29.05mm Dot pitch: 0.138 x 0.138 Resolution: 296 x 128 Display color: black, white Grey level: 2 Partial refresh time: 0.3s Full refresh time: 2s Refresh power: 26.4mW(typ.) Standby power: Less than 0.017mW Viewing angle: 170 Pico header compatibility onboard female pin header for direct attaching to Pico Resources/User Manual https://..com//Pico-ePaper-2.9 Package Contents: 1 x Hexagon Screw Pack 1 x E-ink screen expansion board 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.