Two-way power (Solar + Battery)
Solar powered when light is sufficient, battery powered when light is insufficient.
Function command signs
A symbol (+, -, ×, ÷) on the display indicates the status of operation you are currently performing.
Key operations are stored in a buffer, so nothing is lost even during high-speed input.
Extra Large display
Larger display makes more data easier to read.
Designed and engineered for easy operation.