Zebra ZD421T, Thermal transfer, 300 x 300 DPI, 102 mm/sec, Wired & Wireless, Grey Zebra ZD421T. Print technology: Thermal transfer, Maximum resolution: 300 x 300 DPI, Print speed: 102 mm/sec. Connectivity technology: Wired & Wireless, Ethernet LAN, Wi-Fi, Bluetooth, Bluetooth version: 5.0, USB port. Product colour: Grey