Model Name : Casio Portable SL-240LB Calculator
 
Product Details

*Extra Large display
Larger display makes more data easier to read.

*Two-way power (Solar + Battery)
Solar powered when light is sufficient, battery powered when light is insufficient.

*Key rollover
Key operations are stored in a buffer, so nothing is lost even during high-speed input.

*Profit margin percent
" % " key gives quick access to prices and profits, and also delivers add-ons, discounts, ratios and increase/decrease values.

*Function command signs
A symbol (+, -, ?, ?) on the display indicates the status of operation you are currently performing.