I tried this calculator and liked it, BUT, it's not solar. I had a Radio Shack 15 year old financial calculator that was incredible but finally display went after years of daily use. And IT was solar. Why have a calculator that you have to tape extra batteries to to use? And they are expensive if you use it on a daily basis and need to replace. Maybe TI is getting kickbacks from battery manufacturers. So...I went with Casio FC-200V financial. Does all the TI and more. And Casio is environmentally consious and uses this "new" technology called solar. Get more detail about Texas Instruments BA II Plus Professional Financial Calculator.
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