1.No backlight, keeps displaying last content for a long time even when power down.<P>2.Ultra low power consumption, basically power is only required for refreshing.<P>3.SPI interface, for connecting with controller boards like for //Nucleo, etc.<P>4.Onboard voltage translator, compatible with 3.3V/5V MCUs .<P><P>Specifications :<P>Operating voltage: 3.3V~5V<P>Interface: 3-wire SPI, 4-wire SPI<P>Dot pitch: 0.212 x 0.212<P>Resolution: 400 x 300<P>Grey level: 2<P>Full refresh time: 4s<P>Refresh power: 26.4mW(typ.)<P>Standby power: less than 0.017mW<P>Viewing angle: more than the170 degree<P>Colour:Blue white<P>Material:PCB <P>Size:103 x 78mm<P><P>Package Contents:<P>1 * 14.2 Inch E-Ink Display Module<P>1 * wire<P><P>Only the above package content, other products are not included.<P>Note: Light 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.