Printing Specification Method : Direct Thermal Speed : 220mm/Sec Width : 72mm(512 Dots/Line) Resolution : 180 Dpi Direction : Unidirectional With Friction Feed Paper Specification - Type: Thermal Receipt Paper - Width : 80 Mm - Thickness : 0.06 ~ 0.09 Mm - Roll Diameter : Max. Ø 83.0 Mm - Roll Core Inner Diameter : 12.5 Mm ± 0.5 Mm Interface - Standard : Usb(B Type)+Serial(Rs-232c) - Option : - Usb(B Type)+ Ethernet - Usb(B Type)+ Serial(Rs-232c)+Wi-Fi(802.11 A/B/G/N) Or Bluetooth(Ios) What's in the box PRINTER