The Ronda 013P-21 watch movement, likely designed by Record around 1970 and also utilized by Longines, features a manual wind mechanism and a sweep second function. It includes a date feature that can be set by changing 21-24 hours. The movement is equipped with an Adjustable Stud Holder and KIF Shock Protection for increased durability. Additionally, the movement incorporates a Sweep Seconds feature and a Calendar function. This movement was predominantly used during the approximate period of 1970.