EXTRA-LARGE 12-DIGIT DISPLAY – Clear, easy-to-read screen enhances visibility for fast, accurate data entry—ideal for finance, accounting, and office use. COST/SELL/MARGIN KEYS – Quickly calculate profit margins with dedicated keys designed to streamline business and retail calculations. TAX CALCULATION FUNCTIONS – Easily add or subtract tax values with built-in tax keys, simplifying invoice and pricing work. KICKSTAND DESIGN – Built-in angled display stand offers optimal viewing and reduces neck strain during long sessions. SOLAR + BATTERY POWER – Dual power source with solar panel and battery backup ensures reliable performance in any lighting condition.