The International Durowe 7427/3 watch movement is a Record design that was adopted by Longines when they acquired Record. It is not clear if other variants were produced under Wittnauer calibers. Manual-wind versions and automatic versions without a date function have been observed from Wittnauer, while no such versions have been seen from Record or Longines to date. Differences between the 11KS and C11KS-2 are unknown. The movement includes functions such as manual winding, sweep seconds, and automatic winding. It was typically used in watches manufactured around 1960.