
The Zebra ZD421 direct thermal label printer features a resolution of 203 x 203 DPI and a print speed of 152 mm/sec. It supports USB 2.0 and Bluetooth 5.0 (with Low Energy) connectivity. The printer measures 177.5 x 220.8 x 150.7 mm and weighs 1.35 kg. It includes a built-in 4" LCD screen and 256 MB of internal memory. It operates within a temperature range of 4.4 to 41 °C and a relative humidity of 10-90%.