The Bettlach 1226 watch movement is a manual wind mechanical movement with a pin-lever escapement. It features a ratchet on the dial side and a crown mechanism with a rocker bar. The movement includes a 2-layer base plate and is part of a series that includes the 291, with the differences between the two variants not known. The Bettlach 1226 movement incorporates sub-second functionality and was used during the period around 1952.