The Zebra ZT421 is an industrial thermal transfer label/barcode printer designed for continuous, high-volume printing in warehouses and manufacturing. This 6-inch-wide, 203 dpi configuration includes RFID encoding capability ('RFID U'), letting it both print and encode RFID tags in a single pass for inventory and asset-tracking applications. It ships with a European/UK power cord and connects via serial, USB and 10/100 Ethernet, plus Bluetooth 4.1 with Apple MFi certification for mobile printing, and a USB host port for peripherals. Being an industrial-grade unit rather than an office printer, it's built for durability under continuous shop-floor use rather than light or occasional printing.