The Bettlach 8460-73 watch movement features an indirect minute hand friction clutch on the barrel, allowing for smoother movement. The movement utilizes a larger barrel and a larger balance due to the ample space in the center. Early samples of the movement had a fixed stud carrier, while later versions had an adjustable stud carrier. The movement functions as a manual wind mechanism and incorporates Incabloc Shock Protection. The Bettlach 8460-73 movement was commonly used in watches manufactured around 1960.