Casio MJ-100D Plus 10-Digit Basic Calculator Black

Auto review by pressing one single button
Recheck function allows confirmation of errors by sound when checking calculations
Automatic calculation of price plus tax, price less tax, discount, selling price, tax amount, discount amount, and margin amount
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