The Lavet-form stepping motors used in analog quartz clock movements which on their own are pushed by a magnetic field (generated from the coil) is usually impacted by exterior (nearby) magnetism resources, and this may well influence the rotor sprocket output. Therefore, the mechanical output of analog quartz clock movements https://claytonbckya.blogdon.net/not-known-facts-about-quartz-watch-fitron-36351848