Ads by Google
description
check and correct electronic calculator Autumn Festival
1)12 digits and correct calculator.
2)the check key and correct key can modify the wrong inputted numbers.
3)dual power supply ( solar and battery).
4)99 steps reply to check each process. and it can correct the mis-input .
5)it switch the power off automatially if there has been no key entered for about 5 minutes.
6)it seems clearly with big screen.
7)magnet on the back.
cost function calculator