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In 1970, the American company HAMILTON introduced the world's first all-electronic wristwatch, a watch completely without mechanical components, called as "solid state". This watch displayed the time digitally, in digits with red active optoelectronic components, the light-emitting diodes (LED). The way this time was displayed was also the first real innovation in 500 years of watch development. The bright and high-contrast LED digit indicators, which are also visible in the dark, enabled completely new watch design concepts, which founded the so-called "space-age".

 

The LED watch also falls into the age of the first electronic calculators and was consequently referred to as the "time computer".The world's first computer wristwatch, solar wristwatch and alphanumeric wristwatch used an LED display. 

Unfortunately, the era of these beautiful watches lasted only about 8 years. Due to the high power consumption, LED watches were not suitable for everyday use and were replaced by the LCD watches after a short time. Nevertheless, to my knowledge, there are more than 1,000 different models of these watches worldwide.

A very good variant, which combines the beauty of the bright red LED display with the required practicality of a wristwatch, was the so-called "Day & Night" watches, which contain both an LC display, which can constantly display the time, as well as an LED display, which displays the time at the touch of a button.

On this page I would like to introduce the LED watches of my collection.

HEUER CHRONOSPLIT LED/LCD  Model 100.703

HEUER Chronosplit II LCD/LED Model 100.703 (year of publication: 1975)

The HEUER Chronosplit LCD/LED is the world's first digital electronic wristwatch with a chronograph (stopwatch). The Chronosplit was therefore particularly popular in the Formula-1 scene. Enzo Ferrari had a special model limited to 15 pieces with its company logo made as a gift for friends and business partners.
The Chronosplit was worn by famous Formula-1 drivers such as Niki Lauda and Gilles Villeneuve, as well as by actor and amateur racer Paul Newman.

In the American television series "The Gemini Man", the HEUER Chronosplit was the technical highlight with which the Gemini Man made himself visible or invisible. In the film, the watch was nuclear-powered. Name “Chronosplit” and HEUER logo had been removed from the watch, so viewers didn't know that this watch really does exist.

The traditional house Tiffany & Co. also had a custom-made version of this watch with its name made.

LONGINES Day & Night LCD/LED Kaliber L 785.1

LONGINES Day & Night LCD/LED Kaliber L 785.1 (year of publication: 1976)
The LONGINES Day & Night is one of the watches equipped with a dual display. The watch shown here is the very rare stainless steel version produced in Switzerland by the Companie des Montres Francillon S.A./Saint-Imier. The golden version of Longines Day & Night, the "Gemini II", was developed and manufactured in the USA.
The base calibre comes from the American company Hughes Aircraft.

the LED-watches (to see the model name place the mouse-pointer over the foto):

PULSAR DATE/COMMAND Mod 3120 4kt Gold-Filled PULSAR FOR LADIES Mod 2406-2  Stainless Steel HEUER CHRONOSPLIT LED/LCD  Mod 100.703
ELEKTRONIKA 1 Stainless Steel COMPU CHRON Stainless Steel CORVUS SOLID STATE Stainless Steel
BIRKS Stainless Steel MICROSONIC Stainless Steel BULOVA QUARTZ Mod N7
LONGINES DAY & NIGHT COMPU CHRON POCKET WATCH Stainless Steel WITTNAUER POLARA Mod 125 gold plated with rare DOW display
STERLING LED WATCH PEN Stainless Steel

here are some interesting LCD watches (to see the model name place the mouse-pointer over the foto):

CASIO MELODY M-15A Module 677 ELEKTRONIKA 5 POCKET WATCH Stainless Steel
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