The Bettlach 8429-74 is a mechanical watch movement that was produced starting from 1972. It features a pin-lever escapement with ruby pins and has an indirect second and minute function. The movement includes a ratchet on the dial side and a crown mechanism with a rocker bar. The model is identified by the signature "060A22". It is a manual wind movement with a sweep second hand and a date function that is set by changing the time from 21:30 to 24h.