The Omega 591.331 watch movement features an Adjustable Stud Holder, employed for precise regulation of the hairspring's oscillation. It also incorporates Shock Protection mechanisms to enhance the movement's durability and resistance to external impacts. The Beat rate is set at 21600 vibrations per hour, determining the timekeeping accuracy. Furthermore, the movement is equipped with 17 Jewels, which reduce friction and enhance the overall performance of the watch.