The Seiko 5Y31-8A29 is a watch model based on the 5Y31 movement.
Parts List
| 290A03JN02 | crystal - crystal |
| 290A03JN | crystal |
| 290W91JN01 | crystal |
| 290W91JN | crystal |
| 35MJ5NN1 | crown - crown |
| 0F240BAA3 | case back gasket - case back gasket |
| 0F240BAA | case back gasket |
| BPK13G | band |
| BPK11G | band |
| 3AA125F3ANG | others - second hand |
| 11T47AGH | others - hour hand |
| EB0055B01 | others - crown and stem gasket |
| 0351671 | others - winding stem |
| 2BC110A1BCA | others - minute hand |
| 12SC23T1 | others - second hand |
| 12T21AGM | others - minute hand |
| 12T21AGH | others - hour hand |