The Heuer 15 watch movement, utilized between 1968 and 1972, incorporates a Triovis micrometer regulator and features an indirectly driven minute and automatic gear integrated into the movement, enabling a low profile. The movement also includes a ratchet on the dial side and a crown mechanism with a rocker bar. Additionally, it incorporates a relatively small rotor ball bearing. Although the differences between the 407 and 408 are unknown, the 407 movement encompasses automatic winding, a sweep second function, and a quickset date function.