Powered by a Solar Cell, slim trendy Canon Premium Calculator, app. 3-3/4" x 6-1/4". New in its original box, still wrapped in its original cellophane. Functions include cost-sell-margin, square root, grand total, sign change, and backspace key along with increased memory capability. Has a large 12-digit number display and feel-top keys. Great for taxes or other office / business use. With instruction book as shown. 100% solar powered for maximum energy efficiency. Contains no battery. Environmentally great. $20