Here is a new LED model watch shows or Japanese. A still original way to display the time.
Press the button at the top right of the dial and watch the screen lights up. In time mode, the columns represented the hours in binary code while rows of minutes. In date mode, the columns represent the month while the rows represent days. You decide if you want the LED watch displays the time at random intervals (approximately every 10 minutes) or shows the time when you tap the button.
You’ll find yourself writing strange equations on the blackboard .. . Yes, this shows increases IQ!)