Hand-held or desktop calculator with easier-to-use features * Large easy-read 8-digit LCD screen with tilt gives you best viewing angle for hand or desk use * Over-sized buttons help prevent "fat-finger" mistakes; displays numbers to 99,999,999 * Functions include square root, percentage, clear, clear-entry plus 4 memory keys * Size 7" x 5"; powered for months by single button cell battery, easy to change