The Lemania 13CH watch movement is an open face calibre with a Breguet hairspring. It features pallets and an impuls pin made of steel, provided it has 7 jewels. The specific differences between the calibres 7, 570 through 573, 670, and 671 are not known. The movement is part of a family of calibres with sizes ranging from 15.25 to 16.5''', and certain details of these calibres are only partially known. The Lemania 13CH movement functions include stem wind and set, as well as sub seconds. This movement was used around the period of 1930.