The Seiko 7431-6120 is a watch model based on the 7431 movement.
Parts List
| 270P03HN03 | crystal - crystal |
| FH2780B0A | case back gasket - case back gasket |
| 86571271 | crystal gasket - plastic gasket for crystal |
| AA28B | band - band |
| 10SC55ER | others - second hand |
| 743110 | others - machine code |
| 74316120WZ | others - case |
| 7431613LXN19 | others - dial |
| A160BS | others - push pin |
Caliber 7431
