The Seiko 7431-5180 is a watch model based on the 7431 movement.
Parts List
| SADN61HN00 | crystal - crystal (inorganic) |
| SADN61JN00 | crystal - crystal (inorganic) |
| 35NA3NA1 | crown |
| 0H2500B01 | case back gasket - case back gasket |
| DZ0065B01 | case back gasket - button gasket |
| YK04B | band - band |
| 1AH070A1BAA | others - hour hand |
| 3AA125F1ANG | others - second hand |
| 0354077 | others - winding stem |
| 7431518025 | others - case |
| 82706790 | others - case ring |
| 743110 | others - machine code |
| 74315230XG19 | others - dial |
| 74315670XG19 | others - dial |
| A180BS | others - push pin |
| 10SC25T1 | others - second hand |
| 10P29AGM | others - minute hand |
| 10P29AGH | others - hour hand |
Caliber 7431
