the dual operation works rather well and its very nice to have the best of both worlds. sharp basic was rather good and despite having only one line to program is easy to operate with the many shortcuts available.
the unit is wider than the pc-1251, but considerably slimmer than the later pc-1250 and pc-1260 models. this is due to the lack of available expansion, the unit having a fixed 4k memory, but makes it significantly more convenient to carry around in a pocket.
its is powered by 2 cr2032 cells.