The Seiko 5K25-0A90 watch movement features automatic winding, a date display, central hour and minute hands, a small seconds sub-dial, and a power reserve of approximately 48 hours. With a frequency of 28,800 beats per hour (4Hz), it incorporates 21 jewels to enhance its durability and accuracy. The movement has a diameter of 11.5 lignes and a height of 4.9mm, making it suitable for various watch case sizes. The movement also includes a hacking mechanism for precise time setting. It is worth noting that the movement includes a balance spring and an escapement system for regulating the movement of the hands.