The Citizen 4-038991 watch movement features a pointed balance staff supported by white synthetic jewels. Its electromechanically controlled balance motor enables precise timekeeping. It includes a sweep second hand for continuous movement. The day function can be adjusted by +/-24 hours, while the date function offers a quickset feature. The movement also includes a hack feature, allowing for accurate time synchronization. The Citizen 4-038991 movement was commonly utilized in watches during the approximate period of 1970.