Sharp EL-243S 8 Digit Hard Cover Calculator | A compact pocket size calculator for general use, perfect for carrying in pants pockets or small bags for calculating all your daily mathematical equations including percentages | LCD display showing up to 8 numbers at a time for convenience viewing | Solar Powered with 1x LR1130 alkaline battery, secured by child-safe lock | Storing the value of previous equation in memory | To calculate certain percentage of a number e.g. 100 + 10% gives you 110. Great function for calculating before or after tax amount of a certain item | A portion of the equation is automatically memorised as a constant (function Plus, Minus, Division, Multiplication) , thus omitting redundant input. E.g. 2 x 5 = 10, pressing = will multiply by 5 again | This function is great for instances where you'll need to calculate the same equation with a different variable e.g. stocktake or estimating sales | The calculator powers off automatically when not in use to save battery | The square root of a number is a value that when multiplied by itself equals the original number | | 8 digit LCD screen | Twin power (solar cell and battery LR1130 x 1) | Large screen display | Hard cover to protect calculator | Raised well spaced Keyboard