This is a 2.13 inch e-Paper display with 250x122 resolution, SPI interface, supports 1.5s fast refresh, 3s full refresh, 0.42s partial refresh, and display is capable of displaying images with black and white content. Your image holds indefinitely without power - turn your image on, then turn off the power. Once these e-paper modules are updated they require no power and can effectively be disconnected entirely and the content will remain on the screen indefinitely. This GDEY0213B74 e-paper display is perfect for low power devices powered by solar or batteries.