Print Method: Impact dot matrix ; Control Panel: 6 switches and 10 LEDs ; Print Direction: Bi-direction ; Control Code: ESC/P2, IBM PPDS ; Number of Pins: 24 ; Ultra High Speed Draft: 10 cpi: 550cps ; High Speed Draft: 10 / 12 cpi: 487 / 584 cps ; Draft: 10 / 12 cpi: 366 / 439 cps ; NLQ: 10 / 12 cpi: 121 / 145 cps ; Printhead life: 400 million strokes / wire ; Mean Print Volume Between Failure (MVBF): 50 million lines (except print head) ; Mean Time Between Failure (MTBF): 25,000 Power On Hours (POH) (25% Duty)