Vintage 1980 Seiko Automatic Green Dial Square Men’s Watch Ref. 7005-7020 906116 serial number Green dial with gold hour markers and date A green sphere that changes color depending on the light. Generic green leather strap, nice combination The plexiglass is in good condition. What a stunning watch! The green dial on this one is beautiful! The watch works perfectly good time. It’s a mechanical automatic with no crown wind so it runs from pure motion winding. It does show some signs of it’s age.