Displays up to 300 previous calculation steps.The Recheck function with Sound Assist 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.Displays numbers in three digit separator formats (Standard, European, and Indian).Larger display makes more data easier to read.Solar powered when light is sufficient, battery powered when light is insufficient.Key operations are stored in a buffer, so nothing is lost even during high-speed input. • Recheck Function: 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 • F-Cut Key to control number of digits display after decimal and rounding off number • Dedicated Tax keys for calculation of price plus tax, tax amount, Price less tax. • Heavy Duty Calculator with 12 Digit Display and 300 steps Check & Correct Calculator for office and Shops • Dedicated GT key for Grand Total Calculation • Indian Comma Marker for easy reading of numbers in Lakh & Crore. Can be set to show numbers in Million & Billion also. • Operation symbol on display (+, -. x, ÷) indicates the status of operation you are currently performing