Easy-to-read, 12-digit large LCD display is angled to reduce glare. Also offers large well-spaced keys. Cost-sell-margin keys allow you to quickly & easily solve CSM problems by entering two variables & the third appears. Decimal selector (six-decimal settings) & round off selection, three-key independent memory, percent, square root, change sign & backspace keys. Dual power (solar / battery) with automatic power down.