The Zebra ZT421 is a thermal transfer label printer designed for medium printing tasks, featuring a print resolution of 8 dots per millimeter (203 dpi) and a maximum print width of 168 mm with a media width of up to 178 mm. It supports maximum roll diameters of 203 mm and achieves print speeds of 305 mm per second for efficient performance in various environments. Connectivity options include two USB ports, RS232, Bluetooth, Ethernet, and Wi-Fi 802.11ac, while it emulates the programming languages EPL, ZPL, and ZPLII for compatibility with different systems. Equipped with 256 MB of RAM and 512 MB of flash memory, this printer features a color touchscreen display and a real-time clock for easy operation and accurate timestamps. Weighing 20.8 kg, the ZT421 is designed in black and gray tones and includes a power cable compatible with EU and UK standards, with interface cables sold separately. This model is a successor to earlier Zebra printers, emphasizing reliability and versatility for applications in logistics, retail, and industrial environments, with a focus on durability and consistent output quality.