The Seiko 8J41-5010 watch movement is a mechanical movement that features a central hour and minute hand, a small seconds subdial at 6 o'clock, and a date indicator at 3 o'clock. It operates at a frequency of 21,600 vibrations per hour and has a power reserve of approximately 42 hours. The movement incorporates 25 jewels and measures 11.5 lignes in diameter, with a total height of 3.75 mm. It utilizes a bidirectional automatic winding system and is equipped with a Glucydur balance wheel and a flat Nivarox hairspring. The Seiko 8J41-5010 movement also includes a hacking seconds function, allowing time setting with greater precision.