Yksinkertainen laskin Casio SL-305ECO tasku hopea valkoinen

The Casio SL-305ECO is a compact, credit-card-sized pocket calculator designed for everyday use at home or at work. The housing is made from recycled plastic and the device runs on solar power with a mercury-free backup battery, providing an eco-friendly option for basic calculations. The slim silver and white design and 8-digit single-line display make it easy to carry and read.

Advantages

This basic calculator offers percentage and tax calculations, a currency converter with three conversion memories, an independent memory function, three-digit comma markers and a plus/minus sign key. Its recycled-plastic housing and solar-assisted power with a mercury-free battery reduce environmental impact while maintaining reliable operation for routine arithmetic tasks.

Suitable for

Key specifications

How to use

Turn on the calculator by exposing it to light so the solar cell can supply power; the battery serves as backup when light is insufficient. Use the numeric and function keys for standard arithmetic. Access percentage and tax functions via the dedicated keys. Program currency conversions into the three conversion memories following the instructions in the user guide and recall them as needed. Use the independent memory to store intermediate results and the plus/minus key to change number sign.

Recommendations

The calculator is intended for basic arithmetic, quick currency lookups and simple tax or percentage computations. Keep the device exposed to light during use for optimal solar-assisted performance and replace the backup battery only with the type specified by the manufacturer.