Extra large 8 digit LCD display with punctuation</br>Twin Power Solar Operation?? automatically switches from solar to battery power in low light</br>4 Key Memory includes memory plus?? memory minus and recall memory?? and clear memory keys</br>Additional Features include percent key and sign change keys?? constant?? and conversion function</br>Tax Keys for easy tax calculations</br></br>Product Description</br></br>Sharp Professional Series EL-330TB semi desk top calculator has a slant LCD read out design and is lead and mercury free. It has a large 8-digit (15.0 mm) LCD display with punctuation?? + Tax?? -Tax keys?? switches between solar and battery power in low light conditions?? 4-key memory and conversion function.</br><br/>http://www.amazon.com/gp/product/B00006IF9N