The El Primero (project development began in 1965) was presented to the press on January 10, 1969 in Geneva. Breitling/Büren/Hamilton/Heuer et al. realized they could not afford to wait to the upcoming Basel watch fair to unveil their project, the caliber 11 (project development began in january 1966 after Dubois & Cie, nowadays known as Dubois Depraz, had approached Willy Breitling with the idea to develop an automatic chronograph in early 1965), so they presented it to the public in Geneva aswell on March 3, 1969. Seiko began their development of the 6138/6139 integrated chronograph caliber around 1967, releasing it to dealers already in May 1969."The automatic Cosmonaute Chrono-matic ref 1809 was released in March, the first automatic chronograph ever, beating the Zenith El Primero to the market by a few weeks. Partly because the name 'El Primero' means 'The First' a myth has grown that the Zenith El Primero was the first automatic chronograph but this is not strictly true. (The Chrono-matic movement is modular; the El Primero was the first integrated automatic chronograph movement). "
Can someone give me some info on the Heuer stop watch, first watch i space. Isn't there a Russian watch that should be first in space? Also, shouldn't the first tourbillon be on the list?
Zenith first introduced the automatic chronograph watch to the public, while Seiko's watch was the first to appear on the market. And while Breitling et al. were close behind the others in production, they were probably the first to put out a plan for such a watch in motion.