The Seiko Y131-5630 is a watch model based on the Y131 movement.
Parts List
| SAEN78AN01 | crystal |
| 35MB0NC1 | crown |
| 0H2600N01 | case back gasket - case back gasket |
| 057ME | band - metal band |
| A180BS | others - push pin |
| 0354786 | others - winding stem |
| 09C38NSH | others - hour hand |
| 09C38NSM | others - minute hand |