• Basic calculator with 12-digit capacity, ideal for office tasks and daily use. • Tax and discount calculation function, allowing you to add or subtract stored tax rates with a single button. • Simple currency conversion after storing up to three exchange rates, making international operations easier. • Quick sign change, useful for operations that require switching between positive and negative values. • Low-power LCD screen, providing a clear display of results. • Dual power supply via solar energy and battery, ensuring continuous operation. • Automatic shut-off after 06/00/0000 minutes of inactivity for energy saving.