If you are a computer science and electronics lover, like to stay up to date with technological news and don't miss a detail, buy the Zebra ZD421D Thermal Printer at the best price. Connections: USB 2.0 USB Speed: 152 mm/s Connectivity: Bluetooth Low Energy Bluetooth Bluetooth 5.0 Plug-in Product: Yes Plug Type: EU Socket Technology: LCD Thermal Type: Thermal Printer Color: Black & White Grey Paper: Labels Features: LCD ScreenInternal Memory: 256 MB Maximum Image Resolution: 203 x 203 dpi Memory: 512 MB Screen: 4" Compatible: Windows Android, iOS Frequency: 50 - 60 Hz Voltage: 100 - 240 V Certificate: RoHS Not Included: WiFi Operating Humidity Range: 10 % - 90 %