The Seiko 7431-5380 is a watch model based on the 7431 movement.
Parts List
| ESXN35HE10 | crystal - crystal (inorganic) |
| 30NA7NA1 | crown - crown |
| 30N91NA1 | crown |
| 0D260BA11 | case back gasket |
| DZ0065B01 | case back gasket - button gasket |
| JK26A | band - band |
| JK27A | band - leather band |
| 09SC27NG | others - second hand |
| 10P53NGH | others - hour hand |
| 3BA125F1BNG | others - second hand |
| 09P03DGM | others - minute hand |
| 2AA090A1BNG | others - minute hand |
| 0354077 | others - winding stem |
| 743153801MA | others - case |
| 82721710 | others - case ring |
| 743153801MC | others - case |
| 74315380 | others - case back |
| 743110 | others - machine code |
| 743153801M | others - case |
| 743153801MB | others - case |
| 743153801R | others - case |
| 74315520XB14 | others - dial |
| 74315520XG14 | others - dial |
| 74315660XG14 | others - dial |
| A180BS | others - push pin |
Caliber 7431
