This essential tool for math, science, and statistics solutions performs common and natural logarithms and antilogarithms, reciprocals, powers, roots, factorials and trig functions (including inverses), in degrees, radians, or grads. It provides valuable conversion capability: polar to rectangular coordinates, degree, minute, second to decimal degrees, 3-key memory and more. Statistical capability handles mean and standard deviation for both sample and population data. The solar-powered unit has large, color-coded keys for easier use. Comes with Quick Reference Card, Quick Reference Guide, and an impact-resistant slide case. Measures: 2.03 x 7.87 x 15.24 cm.