The Citizen 4-221800 watch movement features an Adjustable Stud Holder mechanism, providing precise adjustment of the balance spring. It also incorporates Shock Protection, enabling the movement to withstand external impacts and maintain accurate timekeeping. The movement includes a Sweep Seconds hand, offering a smooth continuous motion. With a beat rate of 36000 vibrations per hour (vph), the movement exhibits high precision timekeeping capabilities. Furthermore, it contains 25 Jewels to reduce friction and enhance movement longevity.