This 2.13inch E-paper is in 250×122 Resolution, with SPI interface, requires minimal IO pins. It support partial refresh and displays black and white two colors. No backlight, keeps displaying last content for a long time even when power down. The refresh time is the experimental results, the actual refresh time will have errors, and the actual effect shall prevail. There will be a flickering effect during the global refresh process, this is a normal phenomenon. Ultra low power consumption, basically power is only required for refreshing. The power consumption data is the experimental results. The actual power consumption will have errors due to the actual use situation etc. The actual effect shall prevail. Provide online user manual. There is also some precautions for e-ink screen refresh etc. Please check carefully while using.