The Seiko Y131-6370 is a watch model based on the Y131 movement.
Parts List
| 280T04ANS0 | crystal |
| 280T04ANG0 | crystal |
| 35M82NA1 | crown - crown |
| 35M82NS1 | crown - crown |
| 86560595 | case back gasket |
| 037MD | band - metal band |
| A180BS | others - push pin |
| 0354786 | others - winding stem |
| 0Z0060B01 | others - crown and stem gasket |