12 digits .Regular percentage calculations.
The recheck function allows confirmation of errors by sound when checking calculations. If the user presses an incorrect key when performing a second calculation to check calculation results, a buzzer sounds to alert the user of the error.
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.