2.9inch e-Paper E-Ink Display Module (B) for Raspberry Pi Pico, 296×128 pixels, Red / Black / White, SPI Interface 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 Comes with development resources and manual (Raspberry Pi Pico C/C++ and MicroPython examples) Specifications operating voltage : 3.3V/5V display color: red, black, white interface: 3-wire SPI, 4-wire SPI grey scale: 2 outline dimensions: 82.00 × 38.00mm full refresh time: 15s display size: 66.90 × 29.06mm refresh power: 26.4mW (typ.) dot pitch ：0.227 × 0.226mm standby current: <0 .01ua (almost none) resolution : 296×128 pixels viewing angle:>170° Advantages of EINK E-paper display utilizes microcapsule electrophoretic technology for displaying, the principle is: charged 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 natural light, 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... Resources/User Manual https://www.waveshare.com/wiki/Pico-ePaper-2.9-B Package Content Pico-ePaper-2.9-B x1 Standoff pack x1