The document provides information on automatic movements used in Rolex watches from the early 1900s to present day. It lists over 100 calibers (movements) with details like beats per hour, year of production, reference numbers of watches they were used in, and any date/day/chronograph functions. The later calibers from the late 1980s onward were used across modern collections like the Submariner, Datejust and Yacht-Master watches.