Manufacturer: Canon USA

Thanks to a host of useful features, this is one of the most user friendly calculators. The upright LCD helps prevent overhead glare and eye strain, while the large display makes numbers appear clear and crisp even in the dimmest lighting. Large keytops and keytop characters make miscalculations almost impossible. Both solar and batter power ensure that you'll always finish whatever you start. Powerful solar cells provide all the energy you need under normal room lighting. The battery instantly takes over when the light source dims so you don't miss a step. Full range of functions include chain multiplication and division, single live memory, extraction of square root, exponential calculations, reciprocal calculations, and percentage add-on/discount. Overflow and error sign. Compact size. Sturdy rubber stands at the back of the calculator prevent movement during operation.