Ltd., which spun off from “Daini Seikōsha” some years ago. The Seiko Watch Corporation acquired the company in 2020.Īnother important arm is Suwa Seikōsha Co. One of the most important is the Seiko Instruments Corporation, formerly known as “Daini Seikōsha.” They are the branch behind the production of mechanical watches, including Grand Seiko luxury timepieces. The Seiko Group is made up of several independent companies. In fact, Frederic Piguet turned to the 6139 when crafting their legendary caliber 1185, which some call the “grandfather of the modern automatic chronograph.” Considering how many automatic chronographs the 1185 has inspired, there’s no denying the 6139’s influential role. This movement centers on its vertical clutch and compact automatic rotor, a design many manufacturers have imitated since the 1980s. Of the three calibers, the Seiko 6139 has had the greatest influence on future generations despite being the least well known. These manufacturers all introduced and launched their automatic chronograph movements in 1969, and this watch style would quickly become very popular throughout the industry. Over 20 years later, two companies and one collaboration would finally make it to series production: Seiko, Zenith, and a joint venture between Heuer, Breitling, and Hamilton. Omega created a prototype of one back in 1948 but later abandoned their production plans. Today, self-winding (or automatic) chronographs are quite common.
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