History of LED Watches
Since the advent of electronic watches that incorporate small computers, digital displays have also been available. A digital display simply shows the time as a number, e.g., 12:08 instead of a short hand pointing towards the number 12 and a long hand 8/60 of the way round the dial. The digital display watch was the newest way to tell time in 500 years.
The first digital watch, a Pulsar LED prototype in 1970, was developed jointly by Hamilton Watch Company and Electro-Data. John Bergey, the head of Hamilton's Pulsar division, said that he was inspired to make a digital timepiece by the then-futuristic digital clock that Hamilton themselves made for the 1968 science fiction film 2001: A Space Odyssey. On April 4, 1972
The Pulsar was finally ready, made in 18-carat gold and sold for $2,100. It had a red light-emitting diode (LED) display.
Most watches with LED displays required that the user press a button to see the time displayed for a few seconds, this was because LEDs used so much power that they could not be kept operating on a continuous basis. Watches with LED displays were popular for a few years, but soon the LED displays were superseded by liquid crystal displays (LCDs), which used less battery power and were much more convenient in use, with the display always visible and no need to push a button before seeing the time.
Digital watches were very expensive and out of reach to the common consumer until 1975, when "Texas Instruments" started to mass produce LED watches inside a plastic case. These watches, which first retailed for only $20, reduced to $10 in 1976.
Now with brilliant new design icons such as Tokyoflash, 01 THE ONE, Seahope, Solsuno etc. fresh and innovative time reading systems are being developed regularly into urban cool wristwatches. A cultural phenomena of individual expression and new ways to look at the time. The largest collection of unique LED watches in the world can be found at www.ledwatchstop.com.. Very soon they expect to add some other fresh and dynamic brands such as Storm, Black Dice, LIP and more!
"Summarized from Wikipedia ...and embellished a bit!"