The Longines 22AS watch movement features a modified base plate that allows for a heavier rotor, enhancing winding efficiency. With a genuine winding mechanism and a larger barrel, the movement provides a significant power reserve. This movement, utilized around 2000, boasts several functions including an automatic chronograph with a module for 60s, 30min, and 12h, cam-switched capabilities. Additionally, it includes an automatic function, sub seconds, a quickset date feature, and a hack feature.