The Seiko 6M23-8004 is a watch model based on the 6M23 movement.
Parts List
| 310P23HN03 | crystal |
| 9M45A3SNG0 | crown |
| 80631411 | pusher |
Caliber 6M23
Other models with the same movement
| 6M23-6000 |
| 6M23-7000 |
| 6M23-7004 |
| 6M23-7009 |
| 6M23-7010 |
| 6M23-8000 |
| 6M23-8010 |
| 6M23-8019 |