More on Amazon.com : http://www.amazon.com/gp/product/B00004UFMI?tag=thefatkidin06-20 <br /> <br />Texas Instruments BA-35 Solar Calculator <br /> <br />Preprogrammed financial and accounting functions <br />Interest conversions from annual percentage rate to effective rate <br />Solar powered--no batteries needed <br />Protective slide case <br />1-Year warranty
