The Otero 907 watch movement, introduced in 1963, features a rotor placed off-center and an integrated winding gear within the movement. This departure from the prevailing practice of attaching the winding gear to a manual-wind calibre adds a unique characteristic to the movement. The Otero 907 is a detached manual wind movement that includes several functions, including automatic winding, sweep seconds hand, and a date feature that can be set by changing the time from 20 to 24 hours.