Fangrui Product Details The Spi Communication Interface Is Reserved For Easy Access To /stm32 And Other Main Control Boards; The Onboard Level Conversion Chip Is Compatible With 3.3v And 5v Level Interfaces No Backlight Required, The Last Screen Display Can Be For A Long Time When The Power Is Off The Power Consumption Is Very Low, Basically Only Consumes Power When Refreshing Onboard 40pin Gpio Interface Is Similar In Size To , Suitable For 5/4b/3b/3b+ Motherboards Suitable For Mall Price Tags, Asset Equipment Tags, Electronic Shelf Labels, Conference Name Tags, Etc Working Voltage: 3.3v/5v Display Colors: Red, Black, White Grayscale: 2 Global Refresh: 16s Communication Interface 3-wire Spl, 4-wire Spi Resolution: 360 X 240pixels Viewing Angle: 170 Colour:as Shown Material:pcb+electronic Components Package Contents: 1 X E-ink Screen Module Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The