This 10-digit calculator featuers a tilted disply, well-spaced keys, and a sleek silver design. Key functions include automatic tax keys, percent key, square root key, 3-key independent memory and automatic constants. Made of recycled plastic and features antimicrobial product proctection. Power Source(s): Battery; Solar; Display Notation: Numeric; Number of Display Digits: 10; Memory: 3-Key.