Casio's SL-320TER+-SK-UP is a high powered pocket calculator in a sleek and sturdy metal casing. Dual powered with an automatic shutdown feature, it uses minimal amounts of energy so that the batteries can go for a long time without requiring replacements. The calculator incorporates a clear 12 digit display and numerous features including Euro conversion, % key, +/- sign change, Tax/VAT and gross profit keys. 12 digit pocket calculator Solar powered with back-up battery Automatic shutdown feature Tax/VAT Functions Gross profit calculator functions Euro conversion feature