3.52 Inch E-Ink Display E-Paper Red Black White Display 3.52-inch electronic ink screen module 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 Portable and compact, easy to operate Suitable for mall price tags, asset equipment tags, electronic shelf labels, conference name tags, etc Operating voltage: 3.3V Display colors: red, black, white Grayscale level: 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 Electronic Ink Screen 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 real thing. The measurement allowed error is +/- 1-3cm.