The LED watch first made an appearance in the 1970s but was superseded by the LCD screen.
Now it's making a comeback, with this fantastic Neo Classic LED Watch. The LED display is hidden behind an 18mm tall highly mirrored screen. The LEDs are lit at the touch of a button.
The classic LED display is combined with current microelectronic technology meaning that while it looks retro the watch has the reliability and accuracy of a modern watch.