OKI MICROLINE 390 Flatbed. Maximum resolution: 360 x 360 DPI, Maximum print size: A4 (210 x 297 mm). Maximum print speed: 270 cps, Normal print speed: 225 cps. Standard printer languages: Epson LQ. Standard interfaces: RS232C. Print head life: 200 million characters, Ribbon life: 2 million characters, Mean time between failures (MTBF): 5000 h