Victor scientific handheld calculator performs 154 functions including fractions. Perfect for students Two-digit exponents. Logarithms. Reciprocals. Powers. Roots. Factorials. Trigs and Hyperbolic Trigs. Degrees. Minutes. Seconds. Decimal Degrees Conversions. One variable statistical calculation. Operates on dual power solar with battery backup. Includes protective hard shell case. Power Sources: Battery Solar Display Notation: Numeric Number of Display Digits: 10 Display Characters x Display Lines: 10 x 2.