The Bidlingmaier 55 watch movement is a Record design that was adopted by Longines when they acquired Record. It is not clear if other variants of the movement were available as Wittnauer calibres. The manual-wind versions and the automatic without date have only been observed from Wittnauer, not from Record or Longines. The specific differences between the 11KS and C11KS-2 variants are not known. The functions of the movement include manual wind and a sweep second hand. It was in use around 1960.