Large Display - 8-digit LCD display</br>Battery Operation - LR1130 batter is included</br>3-Key Memory - includes memory plus?? memory minus?? and recall/clear memory keys</br>Additional Features - Includes percent key?? square root key?? and automatic power off</br></br>Product Description</br></br>Eight-digit wallet calculator features a large LCD screen?? plastic case?? and durable plastic keys. Functions include three-key memory?? percent?? square root?? percent keys and automatic power off. Battery-powered calculator weighs 1.2 oz. LR1130 battery is included.</br><br/>http://www.amazon.com/gp/product/B0006HV4TS