US Patent 6966779 Educational audio/visual clock

An educational audio visual clock having an image window adjacent each numeral on the clock face to show the images of twelve Presidents of the United States at any given time. Images are on an image plate behind the clock face and display the images of the first twelve presidents from midnight until noon wherein the image plate is rotated to reveal the images of the second twelve Presidents of the United States for the next twelve hours, at which point the image wheel returns to its original position. At the top of each hour an LED illuminates the corresponding presidential image and an audio device plays an audio clip related to that president.