This is a Seiko (Seikosha) military wristwatch manufactured in the 1940s.
Features: The dial has the numbers "12" and "24" marked on it, emphasizing legibility.
Mechanism: It employs a small seconds subdial (a separate second hand), a feature commonly found in military watches of that era.
Condition: While there is some age-related deterioration to the paint on the dial, it is a collector's item with the charm of a vintage piece.
It does not work, so it is being sold as junk.