The Seiko 2620-0120 is a mechanical watch movement that features an Adjustable Stud Holder, providing the ability to finely tune the escapement for optimal performance. It incorporates Incabloc Shock Protection, safeguarding its sensitive components against potential damage from external shocks. The movement includes a Sweep Seconds hand, enabling the precise measurement of time in continuous motion. With a beat rate of 21600 vibrations per hour (vph), the Seiko 2620-0120 ensures accurate timekeeping with its high-frequency oscillations.