Features: 1.2.13 Inch Screen: This ink display adopts 2.13 inch screen with the resolution of 250x122 and gray level 2. Adopt 3 wire SPI, 4 wire SPI communication interface. 2.Wide Angle: This E paper screen can clearly display images in ambient light, backlit is not needed, and the viewing angle reaches almost 170 degrees or more. 3.Low Consumption: This electronic paper screen features low power consumption, and it consumes basically only during refresh. 4.Display after Off: This E paper monitor can keep the last screen display content for a long time after power off. 5.Widely Compatible: This ink monitor with SPI control interface, suitable for RasPi, for Jetson, for Nano, for STM32, etc. specification:Item Type: Ink Display Material: Electronic Ink, Printed Circuit Board Operating Voltage: 3.3V Gray Level: 2 Screen Size: 2.13 Inches Resolution: 250x122 Communication Interface: 3 Wire SPI, 4 Wire SPI Global Refresh: 15s Display Size: Approx. 48.55 x 23.71mm / 1.91 x 0.93in Viewing Angle: Over 170 Degrees Display Color: Red, Black, White PackageList:1 x InkDisplay Note1. The FPC cable of the screen is fragile. Bend the cable along the horizontal direction of the screen, not the vertical direction of the screen. 2. Ink screen is more fragile, pay attention to avoid falling, collision, hard press. 3. Note that the screen cannot be powered on for a long time. When the screen is not refreshed, the screen should be set to sleep mode or power off. Otherwise, if the screen stays at a high voltage for a long time, the diaphragm will be damaged and cannot be repaired. 4. When using the ink screen, it is recommended that the refresh time interval is at least 180 seconds, and at least every 24 hours to do a refresh, if the ink screen is not usedfor a long time, the it should be white storage.