Basic calculator CASIO SL-310UC-BK — 10-digit, battery/solar, tax & profit functions, pocket size (70×118×8.4 mm), black

The Casio SL-310UC-BK is a pocket-sized basic calculator with a 10-digit display designed for everyday arithmetic tasks. It supports tax and profit calculations and offers dual power from battery and solar cells, ensuring reliable operation in varied lighting conditions. Its compact black housing and straightforward keypad layout make the unit convenient for quick on-the-go calculations in retail, office, school or personal use.

Advantages

The calculator provides a clear 10-digit LCD readout and simple arithmetic functions including percentage and memory operations, plus dedicated tax and profit calculation keys for fast financial adjustments. Dual power (battery plus solar) reduces downtime and extends battery life. The compact dimensions and lightweight construction make it easy to carry in a pocket or small bag, while the intuitive button layout minimizes input errors during repeated use.

Suitable for

• Basic arithmetic and percentage calculations
• Simple tax and profit computations for small businesses or retail
• Students needing a compact calculator for schoolwork
• Everyday personal finance and budgeting tasks

Key specifications

• Display: 10-digit LCD
• Power: dual power system (solar with battery backup)
• Functions: basic arithmetic, percentage, memory operations, tax and profit calculation keys
• Design: compact, lightweight pocket-sized housing
• Color: black

How to use

Switch on the calculator and enter numbers using the numeric keypad. Use the arithmetic operator keys for addition, subtraction, multiplication and division. For percentage calculations, use the percent key following the number you wish to apply it to. The dedicated tax/profit keys allow you to store and quickly apply a tax rate or calculate profit margins by entering cost and selling prices as described in the product manual. Memory keys let you store, recall and clear intermediate results during multi-step calculations.

Recommendations

For reliable operation, ensure the solar panel receives sufficient ambient light; replace the battery when the display becomes faint. Keep the calculator in a protective pocket or case to avoid key wear and protect the display. For precise tax or profit settings, verify the configured rate before applying it to multiple entries.