Arm yourself with the sophisticated HP 300s+ Scientific Calculator with advanced arithmetic, algebraic and trigonometric functions to tackle your most challenging math and science courses. Work in low-light conditions with solar power plus battery backup. Help protect your HP 300s+ from bumps and drops with the durable slide-on cover. Easily view equations on the sleek 60.5mm x 24.3mm LCD display. See expressions as you would on paper. View your entry and the result at the same time with a student-friendly, 4-line, 15-character textbook display. Improve accuracy and efficiency - use navigation keys to scroll through equations and edit recent entries. Display results in your choice of engineering, scientific or standard notation. Store and recall important results and data with nine easy-to-use memory keys.