• Desktop calculator with large 12-digit display for easy viewing of results • Includes profit margin calculation functions, quick and simple tax calculation, square root, sign change, and memory keys for greater versatility • Attractive metallic design that provides durability and style • Dual power source: solar energy and backup battery, with automatic shut-off to optimize energy consumption • The solar function allows operation even in low light conditions • Ergonomic keyboard with wide and raised buttons, offering greater comfort and sensitivity when pressed • Easy to transport, suitable for use in offices and at home