The A Michel 488 watch movement, introduced in 1968, operates at an older, probably 18000 A/h frequency. It offers optional excenter regulation and showcases a unique design where the train and hand gear are independently powered by the barrel. The movement incorporates a manual winding mechanism, sweep seconds, and a calendar function, with the date set by adjusting the 19:20-24h position. Moreover, it utilizes an offset center wheel, ensuring efficient timekeeping. The A Michel 488 movement has been utilized since its introduction in 1968.