4-inch full-color electronic ink screen Using Elnk Spectra 6 (E6) technology, high contrast, high saturation color display No backlight required, the last screen display content can be maintained for a long time when the power is off Very low power consumption, basically only consumes power when refreshing Used for display applications such as shelf labels, industrial instruments, work cards, etc.<br><br>Operating voltage: 3.3V Display color: E6 full color (E Ink Spectra 6) Communication interface: 2 Grayscale: 3-wire SPI, 4-wire SPI Global refresh: 19s Refresh power consumption: Less than 70mW Sleep current:Less than 0.01uA (close to 0) Resolution: 600 400pixels Viewing angle: 170 (The product appearance and printed words depending on the batch, but this does not affect use) Colour:As Shown Material:LCD+Plastic<br><br>Package Contents: 1 x Screen<br><br>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.