OKI MICROLINE 3391. Maximum resolution: 360 x 360 DPI. Maximum print speed: 390 cps, Maximum number of copies: 4 copies, Built-in barcodes: Code 128, Code 39, EAN 13, EAN 8, Interleaved 2 of 5, UPC-A, UPC-E. Standard printer languages: Epson LQ. Buffer size: 64 KB. Print head life: 200 million characters, Ribbon life: 2 million characters, Mean time between failures (MTBF): 10000 h