Great for office and school work, this Large Display Desktop Calculator features an easy to use calculator with a large 12-digit angled LCD display and large buttons. Calculator has basic functions and memory and percentage calculations. Calculator measures approximately 5.875" x 7.5". It has internal battery backup (1 button cell battery included) and requires 1 'AA' battery (not included). Comes packaged in an individual box. Box measures approximately 6.125" x 1.25" x 7.5".