This top of the range scientific calculator presents 403 mathematical functions on its exceptionally clear & easy-to-read Natural Textbook Display. This ever popular model is now available with Random Integers & an enhanced equation mode, as well as solar power. Features Twin line 10 digit display. 403 functions. Multi-replay. Matrix/ Vector. logic operations. Slide on hard plastic case. Regression analysis. Scientific constants. Metric conversion. 7 memories. 24 parentheses & %.