Hamilton "Pulsar" quartz wristwatch with LED digital display, Hamilton Watch Co.; Electro-Data Inc., Lancaster, Pennsylvania, United States; Garland, Texas, United States, 1972
The Hamilton Pulsar was the first watch without any moving parts. Designed in the United States by HMW of Lancaster, Pennsylvania and Electro-Data Inc of Garland, Texas, it was introduced in 1970 and went into large-scale production in 1972. The watch is quartz-controlled, but has a light-emitting diode (LED) digital display. To conserve battery power, the display is switched on by pressing a button, switching off after a few seconds. LED watches were popular for a time, but were eclipsed by LCD (liquid crystal display) watches.
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- Sotheby Parke Bernet and Co
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