Epson TM-U220D-663, Dot matrix, 6 lps, 0.0472 x 0.122" (1.2 x 3.1 mm), 17.8 cpi, 0.06 µm, Wired Epson TM-U220D-663. Print technology: Dot matrix, Print speed: 6 lps, Character size: 0.0472 x 0.122" (1.2 x 3.1 mm). Printing media thickness: 0.06 µm. Connectivity technology: Wired, Standard interfaces: Ethernet. Mean time between failures (MTBF): 180000 h, Ribbon life: 30 million characters, Safety: UL, CSA, TÜV. Product color: Blue