Casio FX-350ES Plus Scientific Calculator 2nd Edition with 252 mathematical functions.

Features:

• Large 2-line natural display (Natural V.P.A.M.)
• 15/10+2 digit display
• Ability to repeat previous operations and input new data
• Calculations with fractions and display in their true form
• Statistics: standard deviation, linear regression
• 9 variables
• Measurement and conversion of angles in DEG-RAD-GRA
• Trigonometric and logarithmic calculations, powers, roots, and percentages
• Power supply: 1 AAA battery

Comes with a hard cover.