PLUS4 has exclusive features for its class: it has an internal flash memory that can store fonts and logos up to 4 MB! It is already equipped with European, International, Portuguese, Nordic, Chinese (GB18030) and Cyrillic fonts. It can print all the most common barcodes and 2D barcodes such as QRCODE. The semi-transparent cover protects the paper sensor from external light and allows the paper roll to be seen to prevent it running out. The paper tray is simply opened by pressing the central green button. A module with serial and parallel interface is available as an option. E' is available in gray, or white on request to match medical equipment.