Development collaboration between Swiss manufacturers.

Sometime in the mid-sixties, it is reported that Eberhard, Favre Leuba, Girard Perregaux and Zodiac (as well as Doxa according to some sources) all contributed to the development of a high-beat watch movement through some form of collaboration. The “joint development” was based upon the Adolph Schild 1687/1688 ebauche and is believed to have focused on the automatic winding mechanism of the movement, but each manufacturer ultimately entered the market with a solution so different that there were actually four distinct movements and it was not even possible to interchange parts between them, so the degree to which there actually was any "joint development" is unclear. What is clear is that among these four collaborating companies, Girard-Perregaux succeeded in bringing the technology to market first.

The Favre-Leuba caliber FL1164, yet another second result of the Swiss collaboration
A third result of the Swiss industrial collaboration, the Favre-Leuba caliber FL1164, also released in 1970 in models such as the Sea Raider and the Harpoon. It too appears to be the result of their own solution for an automatic winding mechanism based on the base Adolph Schild ebauche, although some specifications and components are shared with the Zodiac caliber 86, such as the Triovis micrometer regulator.

Favre-Leuba Harpoon II 36000.

The High-Beat Collection features the Favre-Leuba Harpoon II 36000 reference 36.013 with the caliber FL1164 automatic movement with 21 jewels, sweep center seconds, luminous hour and minute hands, and day and date functions, with signed dial and crown.