Epson C31CH51011CS. Print technology: Thermal, Type: POS printer, Maximum resolution: 203 x 203 DPI. Maximum roll diameter: 8.3 cm, Maximum printing width: 8 cm. Connectivity technology: Wired, USB connector: USB Type-B, Serial interface type: RS-232. Mean time between failures (MTBF): 360000 h, Autocutter durability: 1.5 million cuts. Product colour: Black