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Some of the early solar watches of the 1970s had innovative and unique designs to accommodate the array of photovoltaic solar cells needed to power them (Synchronar, Nepro, Sicura and some models by Cristalonic, Alba, Rhythm, Seiko and Citizen). In 1996, Citizen started to sell analog light-powered watches under the Eco-Drive name. [2]
In 2012, Seiko launched the world's first GPS solar watch, the Seiko Astron GPS Solar. Seiko positioned this watch as the second revolutionary wristwatch after the Astron, which was launched in 1969, and described that it had the ultimate practical functionality, being able to instantly display extremely accurate time anywhere in the world and ...
Edifice watches range from basic chronograph to more advanced models with more computerised movements. Many Edifice watches utilise Tough Solar, Casio's brand name for solar powered batteries. More advanced models are "Waveceptors" which can calibrate themselves with atomic clocks via radio waves. Some models have Bluetooth connectivity which ...
In 1937, Daini Seikosha Co., Ltd. (第二精工舎, Dai-ni-seikōsha), literally the second workshop for manufacturing Seiko timepieces, was established in Kamedo, Kōtō, Tokyo as a spin-off of the watch manufacturing division from Seikosha (精工舎, Seikōsha), so had been making the Seiko watches until 2020. The company changed its name to ...
The Astron was unveiled in Tokyo on December 25, 1969, after ten years of research and development at Suwa Seikosha (currently named Seiko Epson), a manufacturing company of Seiko Group. Within one week 100 gold watches had been sold, at a retail price of 450,000 yen ( US$1,250 (equivalent to $10,386 in 2023)) each (at the time, equivalent to ...
Pulsar P4 Time Computer with LED display ref. 3215-2 mens stainless steel watch circa 1975 Made in the USA A Pulsar LED watch from 1976. In 1970, Pulsar was a brand of the American Hamilton Watch Company which first announced that it was making and bringing the LED watch to market. It was developed jointly by American companies Hamilton and ...