High-Resolution Display: This 3.97 inch e-Paper display features a high resolution of 800x480, providing clear and images for your projects. It supports red, yellow, black, and white colors, enhancing the display effectiveness for applications No backlight required, the last screen display can be for a long time after power failure Wide Compatibility: Designed to be compatible with multiple platforms including for , for , STM32, and ESP32, making it a versatile choice for developers and hobbyists alike Energy Efficient: Utilizes e-Paper technology which is known for its low power consumption, making it ideal for battery-powered projects and applications where power efficiency is crucial Easy Integration: Comes with a comprehensive interface and is easy to integrate into your existing projects, providing a seamless user experience Bare screen version: 3.3V Module version: 3.3V/5V Communication interface:3-wire SPI,4-wire SPI Display colors: red, yellow, black, white Grayscale:2 fast refresh:13s Global refresh:21s Refresh power consumption:Less than 90mW point distance:0.108 x 0.108 (mm) Sleep current Less than 0.01uA (close to 0) resolution:800 x 480 pixels Viewing angle: 170° (The product printed words depending on the batch, but this does not affect use) Color:As Shown Material:LCD Package Contents: 1 * 3.97inch e-Paper(The colors and styles of screws are random, and the specification is not accepted) 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.