1. Nextion Enhanced version is more powerful. Compared to the basic Nextion display, the Nextion display adds some features: support built-in RTC, support saving data to flash memory, support GPIO, larger flash memory capacity, and larger CPU clock. The Enhanced Nextion Series is available in 7 sizes ranging from a generic 2.4inch to 7.0inch. 2. Nextion Enhanced NX3224K028 is a powerful 2.8inch HMI TFT display with 16MB Flash data storage space, 1024 bytes EEPROM, 3584 bytes RAM. With GPIO support, you can now use Nextion to control external devices. 3. Nextion is a seamless Human Machine Interface (HMI) solution that provides a control and visualization interface between a human and a process, machine, application or device. It is the best solution to replace traditional LCD and LED digital tubes. Color: Black Material: plastic Support built-in RTC Support GPIO SD card interface: maximum support 32G Micro-TF/SD card (FAT32 file format) Flash data storage space: 16MB EEPROM: 1024 bytes Memory: 3584 bytes Instruction buffer: 1024 bytes Color: 65K (65536) colors Resolution: 320x240 pixels Adjustable brightness: 0~180 nit, the adjustment interval is 1% Specification Visual area: 48.96mm(L)x36.72mm(W) Layout size: 74.4mm(L)x42.72mm(W)x5.8mm(H) Touch type: Resistive Backlight: LED Backlight life (average): Greater than 30,000 hours Recommended power supply: 5V 500mA DC Package Contents: 1 x 2.8inch Nextion Enhanced HMI Display 1 x power supply test board 1 x 4-pin grove cable 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.