Resolution:300 DPI Print Method:Thermal Transfer/Direct Thermal Memory:128 MB RAM/128 MB Flash Max.Print Width:4.09 in./104mm Max.Print Speed:Up to 8 ips(203mm/s) Media Sensors:Movable Black Mark Sensor/Movable Gap Sensor Emulation:TSPL,ZPL,EPL DPL Interface:USB+Serial+Lan,USB+Serial+Lan+Parallel+GPIO(Optional Wireless Connectivity:Bluetooth/Wi-Fi) Display Screen:3.5" LCD,320*480 pixel Others:Optional RTC,Standard SD Card Slot Media Length:0.39 in.~35 in.(10mm~889mm) Media Width:0.78 in.~4.7 in.(20mm~120mm) Media Roll Size:8 in./203mm Outer Diameter,Core Inner Diameter:1 in.(25.4mm)