1. Nextion Enhanced version is more powerful. Compared to the basic Nextion display, the new Nextion display adds some new features: support for built-in , support for saving data to flash memory, support for 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: BlackMaterial: plasticProduct DescriptionSupport built-in Support GPIOSD card interface: maximum support 32G -TF/SD card (FAT32 file format)Flash data storage space: 16MBEEPROM: 1024 bytesMemory: 3584 bytesInstruction buffer: 1024 bytesColor: 65K (65536) colorsResolution: 320x240 pixelsAdjustable brightness: 0~180 nit, the adjustment interval is 1%SpecificationVisual area: 48.96mm(L)x36.72mm(W)Layout size: 74.4mm(L)x42.72mm(W)x5.8mm(H)Touch type: ResistiveBacklight: LEDBacklight life (average): 30,000 hoursRecommended power supply: 5V 500mA DCPackage Contents:1 x 2.8inch Nextion Enhanced HMI Display1 supply test board1 x 4-pin grove cableOnly 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.