The Seiko 6531-604C is a watch model based on the 6531 movement.
Parts List
| 265W04HM04 | crystal - crystal |
| 35M78EH1 | crown - crown |
| FH2780B0A | case back gasket - case back gasket |
| 86570621 | crystal gasket |
| GL52A | band - band |
| 13SC04XL | others - second hand |
| 10T64FWH | others - hour hand |
| 10T64FWM | others - minute hand |
| 13SC04XA | others - second hand |
| 13SC04XC | others - second hand |
| 13SC04XH | others - second hand |
| 6531604CWZ | others - case |
| 6531604C | others - case back |
| 65316030XS2S | others - dial |
| 65319 | others - machine code |
| A160BS | others - push pin |
| 0354765 | others - winding stem |
| 82731440 | others - case ring |
| 13SC04ES | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |