Even the toughest mathematical problems are no match for the Canon F-502 Scientific Statistical Calculator. Packed with advanced capabilities, this pocket sized scientific calculator handles up to 136 functions and delivers the right answers to virtually any problem. Canon's 4106A003AB F502 scientific statistical calculator performs 136 functions from simple addition and subtraction to advanced trigonometric and statistical calculations. It has a large, high-contrast 10-digit liquid crystal display. Scientific statistical calculator from Canon F502 Large, high-contrast 10-digit liquid crystal display Approximately 5,300 hours of battery life with Auto Power Off after about 8 minutes of non-use Durable plastic key tops for reliable, accurate data entry Includes removable hard cover case Complex number calculation: Two-variable linear and quadratic equations. The F502 approximately measures .6 Lx5.6 Hx3 W, weighs .16 lbs. and is backed by a 1 year warranty.