Okay, it's a kinda nifty name that, the "Halley Computaction SP 4.1". Not sure what it does? Neither was I, but according to the info on S4E, it's one of those little-black-box jobs. You know, like the Multiface, IF1, even the MB02. It was sold in Argentina apparently, and offered the standard "save, reset, return" functionality we're all used to.