To achieve this feat, Mathys based his design on the work of Robert Annen,[3][4][5] who previously had the idea of using ball bearings in small scale horology.

So, Lemania–Lugrin SA built calibres 1200 and 2000, Omega owning a non-exclusive license for the production and the sale of those movements.

[citation needed] In Septembre 79, Bouchet-Lassale SA met some financial difficulties, and the production was stopped.

In December of the same year, Claude Burkhalter, then the director of Lemania-Lugrin SA, declares during an internal meeting that « Omega has the possibility to buy the Jean Lassale brand ».

When Piaget went under the control of Cartier, this exclusivity was released, and Nouvelle Lemania SA could then sell the calibers to different watch companies, among them Vacheron Constantin.

[11] The Abstract of the patent is : An extra-thin manually or automatically wound watch movement in which at least one wheel is pivoted in an overhang position by means of a single-race miniaturized ball bearing.