The Favre Leuba 1149 watch movement is a result of a joint development by Hamilton-Buren, Breitling, and Heuer in the period starting from 1969. It incorporates a Dubois-Depraz 8510 module on a modified Buren 1281 base movement. Noteworthy features include a crown positioned at 9 o'clock, a micro rotor for automatic winding, and a double excenter regulator for curb pins and stud carrier. The indirectly driven minute hand design allows for a low profile. The movement offers a range of functions, including an automatic chronograph with 60s, 30min, and 12h counters switched by a cam, and a date function that can be set by changing the 21-24 hour.