Epson C31C515806, 17.8 cpi, Black, 4 KB, UL, CSA, TÜV, WEEE, RoHS, VCCI, FCC, CE, AS/NZS 3548, USB Epson C31C515806. Character density: 17.8 cpi. Product colour: Black, Buffer size: 4 KB, Safety: UL, CSA, TÜV. Standard interfaces: USB. Ribbon life: 30 million characters, Mean time between failures (MTBF): 180000 h. Weight: 2.3 kg