Solar Plus with battery backup</br>8-digit display (16-digit approximations)</br>Large easy-to-read Big Display</br>Constants for +??-??x??/</br>Independent memory</br></br>Product Description</br></br>Solar Plus Power?? independent memory?? and a profit-margin percent function make this calculator a perfect choice for business and home use. <br><br> <li>8-digit display (16-digit approximations)</li> <li>Large easy-to-read "isplay"</li> <li>Constants for +??-??x??/</li> <li>Independent memory</li> <li>Profit margin %</li> <li>+/-?? square root</li> <li>Solar Plus with battery backup</li></br><br/>http://www.amazon.com/gp/product/B000UUQTKAttunn