CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins80% CONFIDENCEOverall confidence: 80%How well the pin's source and references back up its dates.Weighted average of how firmly 4 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better
Seiko's heritage page: "On December 25th 1969, Seiko released a watch that would revolutionize the watch industry overnight. It was the Quartz Astron, the world's first quartz wristwatch."[1]Seiko put the Quartz Astron on sale on 25 December 1969, the first quartz wristwatch, at 450,000 yen; it began the quartz revolution that upended Swiss watchmaking.
¥450K
1.00
