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This new Big Button Talking Calculator allows you to go back and listen to the data functions. Easy to use with color coded buttons, this calculator is easy to see and hear for both hard of hearing and low vision users.
This calculator is the only one I know of that allows user to hear the entire calculation entered with the touch of a button. This means that the numbers entered for the complete calculation can be audibly reviewed as needed and checked for accuracy. If correction is needed, this is possible as well through the check back or check forward buttons. It will also repeat only the last digit entered if that is what you choose. It gives the ability to correct a calculation rather than start all over again which I find helpful. It has clear, easy to understand speech.
The buttons are ivory with black lettering. Not yellow. There is no on/off button. There is a power port for a DC adaptor on right side but none sold with product.