The Seiko 7431-5220 is a watch model based on the 7431 movement.
Parts List
| ES2W73HN00 | crystal - crystal |
| 35M17NA1 | crown |
| 35M17NS1 | crown |
| 0G235BAA3 | case back gasket |
| 86173810 | crystal gasket - plastic gasket for crystal |
| GL11A | band - band |
| GL12A | band - band |
| 10P07DSM | others - minute hand |
| 1AA070A1BNS | others - hour hand |
| 2AA100A1BDS | others - minute hand |
| 10P07DGH | others - hour hand |
| 3AA125F1A6S | others - second hand |
| 3AA125F1ANG | others - second hand |
| EB0055B01 | others - crown and stem gasket |
| 0354077 | others - winding stem |
| 743110 | others - machine code |
| 7431522061 | others - case |
| 74315280XG14 | others - dial |
| 74315280XS13 | others - dial |
| A180BS | others - push pin |
| 82711110 | others - case ring |
| 7431522075 | others - case |
| 1AA070A1BNG | others - hour hand |
| 11SC17T1 | others - second hand |
| 11SC17T2 | others - second hand |
| 2AA100A1BDG | others - minute hand |
| 10P07DGM | others - minute hand |
Caliber 7431
