The Fleurier 210 is an open-face calibre watch movement with a setting lever positioned between its plates. This lever protrudes from the movement during setting, and the movement can generally only be uncased when the crown is in the winding position. It features a bimetallic screw balance with two adjustment screws. Optional features include a Breguet hairspring and Reed's regulator. Variants I and II of the Cortebert 474 have differing setting bridges, which might also apply to other calibres within this experimental movement family. The Fleurier 210 offers stem winding and setting functionality, along with a sub-second display. It was commonly used around 1910.