Basic calculator CASIO SL-310UC-RD — 10-digit, battery/solar, 29 keys, percent/square root, pocket size (80×118×8 mm), red

The Casio SL-310UC-RD is a pocket-sized basic calculator with a 10-digit single-line display. It supports automatic tax calculations, time calculations and profit margin percent functions, and is powered by both solar and battery sources to ensure reliable operation in varying light conditions. The compact red design makes it convenient for everyday use and on-the-go calculations.

Advantages

The calculator performs automatic tax operations including price plus tax, price less tax, tax amount and related discount and margin calculations. A function command sign on the display shows the current arithmetic operation. Key rollover stores keystrokes in a buffer for uninterrupted high-speed input, while an extra-large display improves readability. Plastic keys are engineered for easy operation, and dual power (solar + battery) maintains functionality when light is insufficient.

Suitable for

• Basic arithmetic and everyday calculations
• Retail and small-business tax and discount computations
• Quick profit margin and percentage checks
• Time-based calculations involving hours, minutes and seconds

Key specifications

• Brand: CASIO
• Model: SL-310UC-RD
• Display: 10 digits, single-line, extra-large
• Power: Two-way (solar + battery)
• Keys: Plastic keys with key rollover
• Functions: Tax calculation, time calculation, profit margin percent, basic arithmetic
• Color: Red
• MPN: SL-310UC-RD
• EAN: 4549526700101

How to use

Enter numbers and operations using the plastic keys; the function command sign on the display indicates the current operation (+, -, ×, ÷). Use the tax function keys to calculate price plus tax, price less tax and tax amounts. For time calculations, input hours, minutes and seconds as required and perform the desired arithmetic. Press the percent key (%) to calculate profit margins, discounts and ratio adjustments. The device will switch between solar and battery power automatically depending on light availability.

Usage recommendations

Keep the solar panel clean and avoid covering it to ensure optimal solar charging. Replace the battery according to the manufacturer’s instructions when solar power is insufficient. Store the calculator in a pocket or small compartment to protect the keys and display from scratches during transport.