The Seiko 7431-5440 is a watch model based on the 7431 movement.
Parts List
| ES9W67HN01 | crystal - crystal |
| 35M39NA1 | crown |
| 0F240BAA3 | case back gasket - case back gasket |
| 86572210 | crystal gasket - plastic gasket for crystal |
| LL11A | band - band |
| LL12A | band - band |
| 3AA125F1ANG | others - second hand |
| 10P55NGH | others - hour hand |
| 10P55NGM | others - minute hand |
| 0354077 | others - winding stem |
| 7431544075Y | others - case |
| 743110 | others - machine code |
| 74315600XB14 | others - dial |
| 74315600XG14 | others - dial |
| A170BS | others - push pin |
| 7431544075 | others - case |
| 82723450 | others - case ring |
| EB0055B01 | others - crown and stem gasket |
| 10SC23T1 | others - second hand |
Caliber 7431
