The Hamilton 749A watch movement features a self-winding mechanism, with a power reserve of approximately 48 hours. It operates at a frequency of 28,800 vibrations per hour (4Hz) and has 25 jewels. The movement incorporates a date function, which can be displayed at the 3 o'clock position. The watch movement is also equipped with a hacking seconds function, allowing for precise time-setting. Additionally, it provides hours, minutes, and central seconds indications. The movement has a diameter of 26mm and a height of 4.58mm.