The Omega 398.0876 watch movement features an adjustable stud holder, providing precise regulation of the watch. It also incorporates the Ultraflex Shock Protection system, ensuring enhanced resistance to shocks and vibrations. The movement operates at a beat rate of 21,600 vibrations per hour (vph), allowing for accurate timekeeping. It is equipped with 17 jewels, reducing friction and ensuring smooth operation of the different movement components.