Product Description: 4.2 Inch Electronic Ink Display with 400x300 Resolution Elevate your display solutions with our 4.2 Inch Electronic Ink Display, featuring a vibrant combination of red, yellow, black, and white colors. With a resolution of 400x300, this electronic ink screen is designed to provide clear and engaging visuals for a variety of applications. Long Lasting Display This electronic ink screen does not require a backlight, allowing it to maintain the last displayed content for an extended period after power off. This feature ensures that your information remains visible and accessible, making it ideal for environments where constant power supply may not be available. Low Power Consumption Designed with efficiency in mind, this electronic ink display boasts very low power consumption. It primarily consumes power only during the refreshing process, making it an energy-efficient choice for long-term use. This characteristic not only reduces operational costs but also extends the lifespan of the display. SPI Interface Equipped with an SPI communication interface, this electronic ink screen can easily connect to various main control boards. This versatility allows it to be utilized in a wide range of applications, including electronic readers, smart devices, and more, providing seamless integration into your existing systems. Wide Application The 4.2 Inch Electronic Ink Display is perfect for diverse settings such as supermarkets, unmanned stores, warehouse shelves, and food chain stores. Its adaptability makes it an excellent choice for displaying product information, pricing, and promotional content in various retail environments. Clear Display Experience exceptional clarity with this electronic ink screen, which displays images and text clearly under ambient light conditions, including artificial lighting and natural skylight. With a viewing angle of nearly 180 degrees, this display ensures that your content is easily readable from multiple perspectives, enhancing user experience. Upgrade your display capabilities with our 4.2 Inch Electronic Ink Display. Its long-lasting performance, low power consumption, and versatile applications make it an ideal choice for modern businesses looking to enhance their visual communication. Order now and transform the way you present information!