Good buying the latter. I was looking for a calculator suitable for my level of higher education, and I found this calculator to proper use. In the unpacking, the first impression I had was that it was particularly light! Which is great (I remembered my old Casio calculator there are only two or three years ago, she was much heavier in my bag!) Moreover, in case of pane in the stack, the small integrated solar charger could save your life before an exam! Finally, I find the "on" button is clever: in fact, it is slightly less high than the other buttons, which means that there is less risk that the calculator turns on by accident and runs down the battery for nothing ...
