This calculator talks to you! No more worrying whether you pressed the right keys and no need to read numbers from a small display. The Reizen Talking Calculator announces keys pressed and calculation results and just in case you get interrupted or don t hear it the first time a Repeat Key ensures that you get it right! FEATURES AND SPECIFICATIONS: - Voice announcement of keys pressed and calculation results - Voice Volume Control: Choose from 4 volume selections: Loud Medium Soft and Off - Large bold 5/8 digits on LCD display - 8-digit display - Repeat Key: Repeats last key pressed or last calculation result - Math functions (add subtract multiply divide equals percent and square root) - Memory functions (memory plus memory minus memory zero memory clear) - Back Key: Allows you to erase only the last digit entered - Units/Digits Key: Choose to have two-digit numbers spoken as a number or as individual digits (ex. announce 10 as either Ten or One Zero ) - Auto Shut-Off after approx. 3 minutes - Uses 2 AA batteries (not included) - Includes headphones for private listening - Color: Black with white keys - Manufacturer s 90-Day Limited Warranty Product Measurements: 6-3/8 Wide x 7 Deep x 2 Thick Product Weight (with batteries installed): 12.7 oz.