The Switchital Clock features a digital screen where letters for showing timing are formed with small metal bars attached to the surface with small magnets underneath. The clock shows only hour and minute, it doesn’t show seconds because of its unique time changing manner. When a minute is over, the individual pats start to move, some gets disappeared and then integrates in a specific place that is required to show the next minute. This movement is done by the magnets that starts pulling the bars to the next position where the need to be placed to show the next minute.
via:tech